PUBLIC SERVICE CO OF OKLAHOMA
U-1, 1997-06-13
ELECTRIC SERVICES
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                                                       File No. 70-



                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                              FORM U-1 APPLICATION

                                    UNDER THE

                   PUBLIC UTILITY HOLDING COMPANY ACT OF 1935
                 -----------------------------------------------


                       PUBLIC SERVICE COMPANY OF OKLAHOMA
                               212 East 6th Street
                           Tulsa, Oklahoma 74119-1212

                   (Names of company filing this statement and
                     address of principal executive office)
               ---------------------------------------------------


                       CENTRAL AND SOUTH WEST CORPORATION

                 (Name of top registered holding company parent)
               ---------------------------------------------------


                               William R. McKamey
                                 General Manager
                       Public Service Company of Oklahoma
                               212 East 6th Street
                           Tulsa, Oklahoma 74119-1212

                           Wendy G. Hargus, Treasurer
                       Central and South West Corporation
                          1616 Woodall Rodgers Freeway
                               Dallas, Texas 75202

                              Joris M. Hogan, Esq.
                         Milbank, Tweed, Hadley & McCloy
                             1 Chase Manhattan Plaza
                            New York, New York 10005

                   (Name and addresses of agents for service)





<PAGE>




                  Public Service  Company of Oklahoma,  an Oklahoma  corporation
("PSO"), is a wholly-owned electric utility subsidiary of Central and South West
Corporation  ("CSW"),  a Delaware  corporation and a registered  holding company
under the Public Utility Holding Company Act of 1935, as amended (the "Act").

Item 1.  Description of Proposed Transaction
                  PSO hereby  requests  authority  to purchase  shares of common
stock of  SCIENTECH,  Inc.,  an Idaho  corporation  ("SCIENTECH"),  as described
below.

Business of SCIENTECH, Inc.
                  SCIENTECH is a privately owned company that provides  services
(and some  ancillary and minor  products) to the nuclear  utility  industry (the
"utility  business"),  and under contracts relating to the nuclear industry with
the Department of Energy,  the Department of Defense and the Nuclear  Regulatory
Commission  (the  "government  agency  business").  Historically,  SCIENTECH has
provided a majority  of its  services to  government  agencies in support of the
nuclear  utility  market.  Over the past three  years,  however,  SCIENTECH  has
adopted a strategy  of reducing  its  reliance  upon  government  contracts  and
applying its  expertise  to capture a greater  share of the utility  market.  In
September 1996,  SCIENTECH  purchased a portion of the assets of Halliburton NUS
Company, a nuclear utility service provider. While a



<PAGE>



majority of SCIENTECH's $53 million of actual revenues for its fiscal year ended
January 31, 1997 came from government contracts, on a pro forma basis, including
the NUS  acquisition,  SCIENTECH's  utility  business  would have  accounted for
approximately 48% of total revenues of approximately $70 million, and government
contracts would also have accounted for approximately 48% of total revenues.
                  SCIENTECH's  utility  business  services are aimed at electric
utilities,   which  are   restructuring   and  outsourcing  in  an  increasingly
competitive environment.  In particular,  SCIENTECH provides services (including
engineering and other  services),  systems  (including  security  systems),  and
instruments,  which  describe,  regulate,  monitor  and  enhance  the safety and
reliability of plant  operations and their  environmental  impacts.  SCIENTECH's
diverse  services  and  products  are  of  particular  value  to  U.S.  electric
utilities.  Nearly 40% of SCIENTECH's utility business involves the analysis and
evaluation  of  operational   safety  and  risk  using   proprietary   software.
Approximately 20% of SCIENTECH's utility business is associated with engineering
and operational  support activities  involving nuclear materials and facilities,
design and  installation  of microwave  transmission  systems,  and training and
simulator instruction for nuclear power plants. Approximately 10% of SCIENTECH's
utility  business  is  involved  with the design and  installation  of  enhanced
physical  security  systems,  and another 10% of its utility  business  involves
support services related to  environmental  compliance and cleanup.  Information
management and other network services


                                                       2

<PAGE>



provide 15% of  revenues  and involve  power  plant and  nuclear  plant  support
services  among  others.  The other 5% of its utility  business is derived  from
software sales which includes software used to support power plant operations.
                  SCIENTECH's government agency business consists principally of
work requiring  skills in safety analysis and assessment,  knowledge of safe and
secure handling of nuclear materials,  technical review, technical policymaking,
and technical policy  implementation.  Principal customers are the Department of
Energy  and  the  Nuclear   Regulatory   Commission  in  many  utility  oriented
activities.  Recently,  the Nuclear Regulatory  Commission awarded SCIENTECH the
contract  to  promote,  maintain,  and service  two  different  safety  analysis
computer codes developed by the U.S. Government for nuclear power plants..
                  SCIENTECH   has  also  applied   some  of  its   expertise  to
applications  outside of the  government  and  utility  industries.  It has sold
environmental services to mining operations,  internet services to non-utilities
and risk and  reliability  services to the  industrial  sector.  These  services
totaled approximately $2 million for the fiscal year ended January 31, 1997.
                  SCIENTECH   also  provides  risk  and   reliability   services
internationally.  These services,  which totaled  approximately $1.3 million for
the fiscal year ended  January 31, 1997,  are being  provided to Canada,  Japan,
Korea,  and former Soviet Block countries.  Approximately  75% of these services
are being funded under contract with the Department of Energy and the Nuclear

                                                       3

<PAGE>



Regulatory Commission.  Most of the remaining work is performed
under direct contract with Japanese and Canadian utilities.

The Proposed Transaction
                  PSO has entered into a Stock Purchase  Agreement,  dated as of
June  2,  1997  (the  "Stock  Purchase  Agreement"),  between  Dr.  Lawrence  J.
Ybarrondo,  Chairman of the Board of  Directors  and founder of  SCIENTECH  (and
certain  related trusts and family  members)  (collectively,  the "Sellers") and
PSO. Pursuant to the Stock Purchase Agreement, and subject to certain conditions
including  receipt of an order from the Securities and Exchange  Commission (the
"Commission")  approving this Application,  PSO shall purchase from the Sellers,
at a  purchase  price of $6.00 per  share,  or an  aggregate  purchase  price of
$3,036,000,  an  aggregate  of 506,000  shares of  SCIENTECH  common  stock (the
"Shares"),  representing  approximately 25% of the outstanding  capital stock of
SCIENTECH.  The Shares shall  consist of 70,000  shares of Class A Voting Common
Stock ("Class A Stock")(representing  4.5% of the Class A Voting Common Stock to
be outstanding  immediately  following the consummation of PSO's purchase of the
Shares) and 436,000  shares of Class B Nonvoting  Common Stock ("Class B Stock",
and together with the Class A stock, the "Common Stock")  (representing  100% of
the Class B Nonvoting Common Stock to be outstanding  immediately  following the
consummation of PSO's purchase of the Shares). In addition, PSO has been granted
an option (the "Option") to purchase,  subject to and conditioned  upon approval
by the Commission of this Application, an

                                        4

<PAGE>



additional 206,000 shares of Class B Nonvoting Common Stock from the Sellers not
later  than  September  2,  1998,  at a  purchase  price  per  share  of  $9.00.
SCIENTECH's  capitalization as of June 2, 1997, consisted of 2,105,364 shares of
Class A Stock and no shares of Class B Stock.
                  Each share of Class A Stock entitles its holder to one vote on
any matter coming before the SCIENTECH  shareholders  for a vote. The holders of
Class B Stock  shall not be  entitled  to vote on any matter  coming  before the
shareholders,  except that no amendment to SCIENTECH's Articles of Incorporation
may be  effected  without the  affirmative  vote of holders of a majority of the
outstanding shares of Class B Stock. Each holder of Class A Stock shall have the
right at any time, at the option of such holder, to exchange each share of Class
A Stock, without payment of any further  consideration,  into one share of fully
paid Class B Stock, and each holder of Class B Stock shall have the right at any
time,  at the option of such  holder,  to exchange  each share of Class B Stock,
without payment of any further consideration, into one share of fully paid Class
A Stock.  In all other  respects,  each share of Class A Stock and Class B Stock
issued and  outstanding  shall be  identical.  At no time will PSO own more than
4.9% of the outstanding Class A Stock.
                  PSO  and  the  Sellers   have  also  entered  into  an  Escrow
Agreement, dated as of June 2, 1997 (the "Escrow Agreement"),  pursuant to which
certificates  representing  the Shares and the purchase price therefor have been
deposited  with  an  escrow  agent  until  the  Commission  has  acted  on  this
Application.


                                                       5

<PAGE>



                  PSO  and  each  SCIENTECH  shareholder  have  entered  into  a
Shareholders Agreement, dated as of June 2, 1997 (the "Shareholders Agreement"),
whereby the  shareholders  have agreed that for so long as PSO holds 10% or more
of the  outstanding  SCIENTECH  Common Stock on a fully diluted  basis  (without
regard to the voting rights thereof),  PSO shall have the right to designate one
member  of the Board of  Directors,  which  shall  consist  of a minimum  of six
members,  and  which  currently  consists  of  11  members.  In  addition,   the
shareholders  have  agreed that in all cases  where the number of  directors  is
greater  than six,  such  additional  directorships  shall be  filled  only with
independent  directors.  Finally,  SCIENTECH  has  agreed  that,  without  first
obtaining PSO's consent,  it will not issue any Common Stock, on a fully diluted
basis,  at a price  lower  than  $6.00 per share,  proportionately  adjusted  to
reflect   any   stock   dividend,    stock   split,   combination   of   shares,
reclassification,  recapitalization,  automatic conversion,  redemption or other
similar event affecting the number or character of outstanding  shares of Common
Stock.
                  PSO has also entered  into a  Registration  Rights  Agreement,
dated as of June 2, 1997 (the "Rights  Agreement"),  among SCIENTECH and each of
its larger  shareholders  (not including  SCIENTECH's  Employee Stock  Ownership
Plan).  The Rights  Agreement  provides that at any time after February 1, 2001,
and before February 1, 2011, upon written request by the holders of at least 60%
of the  outstanding  Common Stock in the case of  registration on any form other
than  Form  S-3,  and  50% of the  outstanding  Common  Stock  in  the  case  of
registration on Form S-3,


                                                       6

<PAGE>



SCIENTECH  shall use its best efforts to register with the Commission the shares
which SCIENTECH has been so requested to register by such holders.
                  The Stock Purchase  Agreement provides that, in the event that
approval or denial of this Application is not received from the Commission prior
to August 16, 1997,  the Stock Purchase  Agreement,  the Escrow  Agreement,  the
Rights  Agreement  and  the  Shareholders  Agreement  shall  be  rescinded,  the
certificates  representing the Shares shall be returned to the Sellers,  and the
purchase price shall be returned to PSO.

Services to the CSW System
                  SCIENTECH,  through its  subsidiaries,  has  performed a small
amount of work at the South Texas Project (STP), a nuclear  generating  facility
partially owned by a CSW subsidiary, Central Power and Light Company. Currently,
STP is subscribing to four  informational  database  services provided by one of
SCIENTECH's  subsidiaries.   It  also  has  an  open  work  order  for  database
maintenance,  although no work has been performed under this contract this year.
No other  services are presently  being provided by SCIENTECH to the CSW system.
After consummation of the proposed investment,  SCIENTECH may provide additional
services or products  to the CSW system,  although no such  services or products
have been identified.



                                                       7

<PAGE>



Request For Authority
                  PSO  hereby  requests  authority  to  acquire  the  Shares  as
described  herein.  To the  extent  that  any  other  aspects  of  the  proposed
investment requires authority from the Commission, PSO hereby requests the same.
                  PSO agrees to file  semi-annual  certificates of notification,
no  later  than  sixty  (60)  days  after  the end of each  semi-annual  period,
concerning the business  activities  carried out pursuant to any order approving
this Application,  which certificates of notification shall contain, inter alia,
the following information:  (i) a description of the types of services performed
by SCIENTECH during the period;  (ii) a description of any services  provided to
PSO or CSW or any other CSW subsidiary by SCIENTECH  during the period;  (iii) a
statement  of any  dividends  or interest  paid to PSO,  both for the period and
cumulatively,  as a result of its  equity  interests  in  SCIENTECH;  and (iv) a
statement  regarding the purchase by PSO of any  additional  shares of SCIENTECH
pursuant to the Option.


                                                       8

<PAGE>



Item 2.  Fees, Commissions and Expenses
         PSO estimates that the approximate  amount of fees and expenses payable
in connection with the transactions described herein is as follows:
 Legal Fees and Expenses

 Milbank, Tweed, Hadley & McCloy
 New York, New York...................                    5,000

 Doerner, Saunders, Daniel
   & Anderson
 Tulsa, Oklahoma......................                 $ 20,000

 Miscellaneous and incidental
    expenses including travel,
    telephone and postage................                   500
                                                       --------
                                                       $ 25,500
                                                       ========


Item 3.         Applicable Statutory Provisions
                General
                Sections  9, 10 and 11 of the Act and Rule 23 under  the Act are
or may be applicable to the proposed investment  described herein.  Section 9(a)
of the Act makes  unlawful  the  acquisition  by a  subsidiary  of a  registered
holding  company of "any securities . . . or any other interest in any business"
without the prior  approval of the  Commission  under  Section 10. Under Section
10(c)(1),  the  Commission  may not approve an  acquisition of securities or any
other interest in any business if the proposed  acquisition is  "detrimental  to
the carrying out of the provisions of Section 11". Under Section  11(b)(1),  the
Commission  must limit the  operations of public utility  holding  companies and
their subsidiaries to such other businesses as are


                                                       9

<PAGE>



reasonably  incidental,  or  economically  necessary  or  appropriate,   to  the
operations of such integrated  public-utility  system. The Commission may permit
as reasonably  incidental,  or  economically  necessary or  appropriate,  to the
operations of one or more integrated  public-utility systems the retention of an
interest in any business (other than the business of a public-utility company as
such) which the  Commission  shall find  necessary or  appropriate in the public
interest or for the protection of investors or consumers and not  detrimental to
the proper functioning of such system or systems.
                The  proposed  investment  by PSO  in  SCIENTECH  satisfies  the
requirements  of  Sections  9(a)(1)  and  10  in  that  it  is  incidental,  and
economically  necessary or  appropriate,  to PSO's core business of  generating,
transmitting and distributing  electric energy. The proposed  investment is also
appropriate  in  the  public  interest  and  is not  detrimental  to the  proper
functioning  of PSO or the CSW system.  PSO's  investment  in SCIENTECH  will be
small  relative  to PSO's  total  financial  resources.  Risks to the  financial
position of PSO also will be limited  because PSO will not be  obligated to make
further capital contributions beyond its initial equity investment. PSO will not
seek recovery  through  higher rates from utility  customers to  compensate  for
possible future losses or inadequate  returns on capital  invested in SCIENTECH,
so that PSO's  shareholders  will bear all risks  associated  with the  proposed
investment.
                Likewise, the proposed investment is consistent with
Rule 58 under the Act.  Paragraph (b)(1)(vii) of Rule 58 would



                                                       10

<PAGE>



permit PSO to acquire  the  securities  of a company  primarily  involved in the
"sale of technical, operational, management, and other similar kinds of services
and  expertise,  developed in the course of utility  operations in such areas as
power  plant  and  transmission  system  engineering,  development,  design  and
rehabilitation;  construction;  maintenance  and  operation;  ...  environmental
licensing,  testing and  remediation;  and other similar areas".  Except for the
minor  international  element of its  business,  SCIENTECH  would  qualify as an
Energy Related Company under  paragraph  (b)(1)(vii) of Rule 58. In this regard,
it is noted that the Commission has permitted subsidiaries of registered holding
companies to engage in certain  energy-related  activities outside of the United
States.  In Eastern  Utilities  Associates,  Holding Co. Act  Release No.  26135
(September 30, 1994), the SEC authorized EUA Cogenex  Corporation,  a subsidiary
of Eastern Utilities Associates,  to engage in energy and demand-side management
activities in Canada based upon the SEC's determination that such activities are
"closely  related"  to  EUA's  core  utility  business.   See,  also,  Northeast
Utilities,  Holding Co. Act Release No. 26108 (August 19, 1994). As in the above
orders,   the  minor   international   element  of   SCIENTECH's   business   is
closely-related to PSO's core utility business.
                The proposed investment also satisfies the two-pronged
"functional relationship" test established by the United States
Court of Appeals for the District of Columbia Circuit in Michigan
Consolidated Gas Co. v. SEC, 444 F.2d 913 (D.C. Cir. 1971), which
traditionally has been used by the Commission in applying Section



                                                       11

<PAGE>



11(b)(1) of the Act.  Under the  "functional  relationship"  test, an integrated
public-utility  system may retain an  interest  in another  business  if (i) the
additional  business is  "reasonably  incidental  or  economically  necessary or
appropriate" to the integrated  system, and (ii) the retention of the additional
business is in the public interest.  Michigan  Consolidated at 916. As discussed
in the preceding  paragraphs,  the proposed investment satisfies the first prong
of the "functional  relationship"  test in that it is reasonably  incidental and
economically  necessary and  appropriate  to PSO's core  business.  The proposed
investment  is also  consistent  with the orders  cited in the  footnote  to the
Commission's  discussion of paragraph  (b)(1)(vii) of Rule 58. (Holding  Company
Act Release No.  35-26313 at note 27 (June 20, 1995).) These orders  authorize a
variety of  services to be rendered by new  subsidiaries  of the  applicants  to
non-affiliated electric utility companies and others: Southern Company,  Holding
Company  Act  Release  No.  22132  (July  17,  1981),  authorizing  the  sale of
"management,  technical  and  training  services  to  non-affiliates";  American
Electric Power Company,  Inc.,  Holding Company Act Release No. 22468 (April 28,
1982), authorizing the sale of "management, technical, and training expertise in
the open,  competitive market to non-affiliated  entities including domestic and
foreign  governmental  agencies,  public utilities and other business concerns";
Middle South Utilities, Inc., Holding Company Act Release No. 22818 (January 11,
1983),  as  supplemented  by Holding  Company Act Release No. 23152 (December 5,
1983), authorizing the operation


                                                       12

<PAGE>



of "a consulting  business for profit,  marketing to  nonaffiliates  management,
technical,  and  training  expertise  developed  by System  companies";  and New
England  Electric  System,  Holding  Company Act Release No. 22719 (November 19,
1982),  authorizing  the  offering of "energy  management  services on the open,
competitive  market  exclusively to  non-affiliates,  primarily the operators of
large  institutional,   commercial,  residential  or  industrial  buildings  ...
including the installation of meters and controls on equipment, the modification
or replacement of inefficient
equipment, and the monitoring of energy consumption".  Although
the aforementioned orders are referred to as authorizing
"consulting activities",  they in fact authorize the provision of a wide variety
of services related to core electric utility  operations to public utilities and
other customers without restriction by a so-called "50% limitation" discussed in
In the Matter of CSW Credit,  Inc., Holding Company Act Release No. 25995 (March
2, 1995).
                    See, also,  Eastern  Utilities  Associates,  Holding Co. Act
Release No. 26232 (February 15, 1995),  in which the Commission  recognized that
the plain  language of Section 11 of the Act is a  sufficient  basis on which to
grant  authorization for the sale of services to  non-affiliates,  without a 50%
limitation, when those services constitute a close complement to the applicant's
core  business.  The  services  authorized  by prior  orders in the same  matter
included demand-side  management and energy management services (and the sale of
related  products)  and  consulting  services.  The order also  recognized  that
changes in


                                                       13

<PAGE>



the utility  industry (in that case the  substitution  of efficiencies in energy
use for the  construction  of additional  generating  capacity)  could result in
expanded views of what constitutes a part of, or is closely related to, the core
business of a public utility company or system.  Finally,  PSO believes that its
maintenance of equity interests in SCIENTECH will be consistent with GPU Nuclear
Corporation, Holding Co. Act Release No. 26139 (October 7, 1994). In that order,
GPU Nuclear  Corporation was authorized to offer to  non-affiliates a wide range
of services to nuclear power plant operators  similar to the services offered by
SCIENTECH and based on  expertise,  resources  and  facilities  developed in the
course of GPU's core business operations.
                To the extent any other sections of the Act may be applicable to
the proposed investment, PSO hereby requests appropriate orders thereunder.
                Rule 54
                No proceeds from the proposed  investment will be used by CSW or
any subsidiary thereof for the direct or indirect  acquisition of an interest in
an exempt wholesale generator, as defined in Section 32 of the Act ("EWG"), or a
foreign utility company,  as defined in Section 33 of the Act ("FUCO").  Rule 54
promulgated  under the Act states  that in  determining  whether to approve  the
issue or sale of a security by a registered  holding  company for purposes other
than  the  acquisition  of an EWG or a  FUCO,  or  other  transactions  by  such
registered  holding company or its subsidiaries  other than with respect to EWGs
or FUCOs, the



                                                       14

<PAGE>



Commission  shall not consider the effect of the  capitalization  or earnings of
any  subsidiary  which is an EWG or a FUCO upon the registered  holding  company
system  if Rule  53(a),  (b) and (c) are  satisfied.  As set  forth  below,  all
applicable   conditions  set  forth  in  Rule  53(a)  are,  and,   assuming  the
consummation of the transactions proposed herein, will be, satisfied and none of
the  conditions  set forth in Rule 53(b)  exist or will exist as a result of the
transactions proposed herein.
                CSW's "aggregate investment" (as defined under Rule 53(a) of the
Act) in EWGs and FUCOs as of March 31, 1997 was approximately  $894 million,  or
about 47% of CSW's  "consolidated  retained  earnings" as of March 31, 1997. CSW
thus satisfies Rule 53(a)(1). CSW will maintain and make available the books and
records  required by Rule  53(a)(2).  No more than 2% of the  employees of CSW's
operating  subsidiaries  will, at any one time,  directly or indirectly,  render
services to an EWG or FUCO in which CSW directly or indirectly owns an interest,
satisfying  Rule  53(a)(3).  And  lastly,  CSW will  submit a copy of Item 9 and
Exhibits  G and H of CSW's Form U5S to each of the  public  service  commissions
having   jurisdiction   over  the  retail  rates  of  CSW's  operating   utility
subsidiaries, satisfying Rule 53(a)(4).
                None of the  conditions  described  in  Rule  53(b)  exist  with
respect  to CSW or any of its  subsidiaries,  thereby  satisfying  such rule and
making Rule 53(c) inapplicable.




                                                       15

<PAGE>



Item 4.         Regulatory Approval
                No  state  regulatory   authority  and  no  federal   regulatory
authority,  other than the Commission under the Act, have  jurisdiction over the
proposed transactions.

Item 5.         Procedure
                It is requested that the  Commission  issue and publish no later
than June 20,  1997,  the  requisite  notice  under Rule 23 with  respect to the
filing of this  Application,  such  notice to specify a date not later than July
14,  1997,  as the date  after  which  an order  granting  and  permitting  this
Application  to  become  effective  may be  entered  by the  Commission  and the
Commission enter not later than July 15, 1997, an appropriate order granting and
permitting this Application to become effective.
                No   recommended   decision  by  a  hearing   officer  or  other
responsible  officer of the  Commission is necessary or required in this matter.
The  Division  of  Investment  Management  of the  Commission  may assist in the
preparation  of the  Commission's  decision in this  matter.  There should be no
thirty-day  waiting  period  between the issuance and the effective  date of any
order issued by the Commission in this matter, and it is respectfully  requested
that any such order be made effective  immediately upon the entry thereof.  Item
6. Exhibits and Financial Statements

   Exhibit 1 - Preliminary Opinion of Milbank,  Tweed, Hadley & McCloy, counsel
   to PSO.

   Exhibit 2 - Final or "Past Tense" opinion of Milbank, Tweed, Hadley


                                                       16

<PAGE>



               & McCloy, counsel to the Company (to be filed with
               Certificate of Notification).

   Exhibit 3 - Proposed Notice of Proceeding.

   Exhibit     4 - Financial  Statements of Public Service  Company of Oklahoma,
               as of March 31, 1997.

   Exhibit 5 - Stock Purchase Agreement, dated as of June 2, 1997.

   Exhibit     6 - Form of Amended and  Restated  Articles of  Incorporation  of
               Scientech, Inc.

   Exhibit 7 - Escrow Agreement, dated as of June 2, 1997.

   Exhibit 8 - Shareholders' Agreement, dated as of June 2, 1997.

   Exhibit 9 - Registration Rights Agreement, dated as of June 2, 1997.

   Confidential
   Exhibit     10-  Financial  Statements  of SCIENTECH as at and for the fiscal
               year ended January 31, 1997 (to be filed by amendment).



Item 7.         Environmental Effects
                The proposed  transaction  does not involve major federal action
having a  significant  effect  on the  human  environment.  To the best of PSO's
knowledge,  no federal  agency has  prepared or is  preparing  an  environmental
impact statement with respect to the proposed transaction.





                                                       17

<PAGE>



                                S I G N A T U R E
                                - - - - - - - - -


                Pursuant  to the  requirements  of the  Public  Utility  Holding
Company Act of 1935, as amended,  the  undersigned  company has duly caused this
document  to  be  signed  on  its  behalf  by  the  undersigned  thereunto  duly
authorized.
                Dated:  June 12, 1997



                             PUBLIC SERVICE COMPANY
                                       OF OKLAHOMA



                            By:/s/WILLIAM R. MCKAMEY
                               William R. McKamey
                                 General Manager





                                                       18

<PAGE>



                                INDEX OF EXHIBITS

EXHIBIT                                                    TRANSMISSION
NUMBER                         EXHIBITS                       METHOD

  1                   Preliminary Opinion of Milbank,      Electronic
                      Tweed, Hadley & McCloy, counsel
                      to the Company.

  2                   Final or "Past Tense" opinion of         ---
                      Milbank, Tweed, Hadley & McCloy,
                      counsel to the Company (to be filed
                      with Certificate of Notification).

  3                   Proposed Notice of Proceeding.       Electronic

  4                   Financial Statements of Public       Electronic
                      Service Company of Oklahoma, as of
                      March 31, 1997.

  5                   Stock Purchase Agreement, dated      Electronic
                      as of June 2, 1997.

  6                   Form of Amended and Restated         Electronic
                      Article of Incorporation of
                      Scientech, Inc.

  7                   Escrow Agreement, dated as of        Electronic
                      June 2, 1997.

  8                   Shareholders' Agreement, dated       Electronic
                      as of June 2, 1997.

  9                   Registration Rights Agreement,       Electronic
                      dated as of June 2, 1997.

 10                   Financial Statements of SCIENTECH       ---
                      as at and for the fiscal year ended
                      January 31, 1997.  (Confidential
                      Exhibit to be filed by amendment)








                                                                EXHIBIT 1


                         Milbank, Tweed, Hadley & McCloy
                             1 Chase Manhattan Plaza
                            New York, New York 10005







                                  June 12, 1997


Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C.  20549

         Re:      Public Service Company of Oklahoma
                  Form U-1 Application

Dear Sirs:

                  We refer to the Form U-1 Application (the "Application") under
the Public  Utility  Holding  Company Act of 1935,  as amended (the "1935 Act"),
filed on the date hereof by Public Service Company of Oklahoma (the  "Company"),
an Oklahoma  corporation  and a  wholly-owned  electric  utility  subsidiary  of
Central  and South  West  Corporation  ("CSW"),  a  Delaware  corporation  and a
registered holding company. The Application relates to the Company's request for
authority under the 1935 Act to make an equity investment (the  "Investment") in
SCIENTECH,  Inc.,  an  Idaho  corporation,   as  more  fully  described  in  the
Application. We have acted as special counsel for the Company in connection with
the filing of the Application.

                  We  have  examined  originals,  or  copies  certified  to  our
satisfaction,  of such corporate records of the Company,  certificates of public
officials, certificates of officers and representatives of the Company and other
documents  as we have deemed it necessary to require as a basis for the opinions
hereinafter  expressed.  In such  examination we have assumed the genuineness of
all  signatures  and  the  authenticity  of  all  documents  submitted  to us as
originals and the conformity with the originals of all documents submitted to us
as copies.  As to various  questions of fact  material to such opinions we have,
when relevant facts were not independently established, relied upon certificates
by  officers  of the  Company  and  other  appropriate  persons  and  statements
contained in the Application.

                  Based  upon  the   foregoing,   and  having  regard  to  legal
considerations which we deem relevant,  we are of the opinion that, in the event
the proposed Investment is consummated in accordance with the Application, as it
may be amended, and subject to the assumptions and conditions set forth below:



<PAGE>



                  1. All state laws  applicable  to the proposed  Investment  as
         described in the Application will have been complied with.

                  2. The consummation of the proposed Investment as described in
         the Application will not violate the legal rights of the lawful holders
         of any securities issued by the Company or any associate company of the
         Company.

                  The  opinions  expressed  above  in  respect  of the  proposed
Investment  as  described  in the  Application  are  subject  to  the  following
assumptions or conditions:

                  a.       The Investment shall have been duly authorized and
                           approved to the extent required by state law by
                           the Board of Directors of the Company.

                  b.       The Securities and Exchange Commission shall have
                           duly entered an appropriate order or orders
                           granting and permitting the Application to become
                           effective with respect to the Investment described
                           therein.

                  c.       The Investment shall have been accomplished in
                           accordance with required approvals,
                           authorizations, consents, certificates and orders
                           of any state commission or regulatory authority
                           with respect thereto and all such required
                           approvals, authorizations, consents, certificates
                           and orders shall have been obtained and remain in
                           effect at the closing thereof.

                  d.       No act or event other than as described  herein shall
                           have  occurred  subsequent  to the date hereof  which
                           would change the opinions expressed above.

                  We hereby  consent to the use of this opinion as an exhibit to
the Application.

                                   Very truly yours,


                         MILBANK, TWEED, HADLEY & McCLOY





                                                     EXHIBIT 3



SECURITIES AND EXCHANGE COMMISSION
(Release No. 35-       )
Filings Under the Public Utility Holding Company Act of 1935
("Act") _______________, 1996

              Notice is hereby given that the following  filing(s) has/have been
made with the Commission pursuant to provisions of the Act and rules promulgated
thereunder.  All interested  persons are referred to the  application(s)  and/or
declaration(s) for complete statements of the proposed transaction(s) summarized
below. The application(s)  and/or  declaration(s)  and any amendment(s)  thereto
is/are available for public inspection through the Commission's Office of Public
Reference.
              Interested  persons wishing to comment or request a hearing on the
application(s)  and/or  declaration(s)  should  submit their views in writing by
___________,  1996  to  the  Secretary,   Securities  and  Exchange  Commission,
Washington,  D.C. 20549,  and serve a copy on the relevant  applicant(s)  and/or
declarant(s) at the address(es)  specified below. Proof of service (by affidavit
or, in case of an  attorney  at law,  by  certificate)  should be filed with the
request. Any request for hearing shall identify  specifically the issues of fact
or law that are  disputed.  A person who so  requests  will be  notified  of any
hearing,  if ordered,  and will  receive a copy of any notice or order issued in
the manner. After said date, the application(s) and/or declaration(s),  as filed
or as amended, may be granted and/or permitted to become effective.


<PAGE>


Public Service Company of Oklahoma (70-____)
              Public   Service   Company  of  Oklahoma   ("PSO"),   an  Oklahoma
corporation and a wholly-owned  electric utility subsidiary of Central and South
West  Corporation  ("CSW"),  a Delaware  corporation  and a  registered  holding
company under the Public  Utility  Holding  Company Act of 1935, as amended (the
"Act"),  located at 212 East 6th Street,  Tulsa,  Oklahoma  74119,  has filed an
application  pursuant  to  Sections  9,  10,  and  11 of the  Act  and  Rule  23
thereunder.
              PSO  is  seeking   authority  to  make  an  equity  investment  in
SCIENTECH,  Inc., an Idaho corporation  ("SCIENTECH").  SCIENTECH is a privately
owned company that provides  services (and some ancillary and minor products) to
the nuclear  utility  industry (the  "utility  business"),  and under  contracts
relating to the nuclear  industry with the Department of Energy,  the Department
of  Defense  and the  Nuclear  Regulatory  Commission  (the  "government  agency
business").  SCIENTECH's  services  are aimed at  electric  utilities  which are
restructuring  and outsourcing in an increasingly  competitive  environment.  In
particular,   SCIENTECH  provides  services  (including  engineering  and  other
services),   systems  (including  security  systems),  and  instruments,   which
describe,  regulate,  monitor and enhance  the safety and  reliability  of plant
operations and their environmental impacts.
              For the  Commission,  by the  Division of  Investment  Management,
pursuant to delegated authority.


                                Jonathan G. Katz
                                   Secretary








<PAGE>
 PUBLIC SERVICE COMPANY OF OKLAHOMA                                   EXHIBIT 4
 INDEX TO
 FINANCIAL STATEMENTS                                                      Page
                                                                          Number

 BALANCE SHEETS - PER BOOKS AND PRO FORMA AS OF MARCH 31, 1997                2

 STATEMENT OF INCOME FOR THE TWELVE MONTHS ENDED MARCH 31, 1997               4

 STATEMENT OF RETAINED EARNINGS FOR THE TWELVE MONTHS ENDED                   5
   MARCH 31, 1997

 STATEMENTS OF LONG-TERM DEBT OUTSTANDING AS OF MARCH 31, 1997                6

 STATEMENTS OF PREFERRED STOCK OUTSTANDING AS OF MARCH 31, 1997               7

 PRO FORMA ADJUSTMENTS TO BALANCE SHEETS                                      8

 STATEMENT OF CHANGES                                                         9

 CAPITALIZATION RATIOS - Per books and Pro forma                             10

 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS                                  11

<PAGE> 

 PUBLIC SERVICE COMPANY OF OKLAHOMA

 BALANCE SHEETS
 PER BOOKS AND PRO FORMA
 AS OF MARCH 31, 1997
 UNAUDITED
 (Millions)
                                              Per    Pro Forma  Pro
                                             Books  Adjustment Forma
                                           --------------------------

 ASSETS

 FIXED ASSETS
   Electric utility plant
    Production                                 $903            $903
    Transmission                                370             370
    Distribution                                785             785
    General                                     195             195
    Construction work in progress                50              50
                                           -------------------------
                                              2,303           2,303
    Less - Accumulated depreciation           1,004           1,004
                                           -------------------------
                                              1,299           1,299
                                           -------------------------

 CURRENT ASSETS
    Cash and temporary cash investments           7     ($3)      4
    Accounts receivable                          22              22
    Materials and supplies, at average cost      33              33
    Fuel inventory                               15              15
    Accumulated deferred income taxes             4               4
    Prepayments                                   2               2
                                           -------------------------
                                                 83      (3)     80
                                           -------------------------

 DEFERRED CHARGES AND OTHER ASSETS               63       3      66
                                           -------------------------

                                             $1,445      $0  $1,445
                                           =========================


<PAGE> 
 PUBLIC SERVICE COMPANY OF OKLAHOMA

 BALANCE SHEETS
 PER BOOKS AND PRO FORMA
 AS OF MARCH 31, 1997
 UNAUDITED
 (Millions)
                                              Per    Pro Forma  Pro
                                             Books  Adjustment Forma
                                           --------------------------

 CAPITALIZATION AND LIABILITIES

 CAPITALIZATION
    Common stock, $15 par value;
     authorized 11,000,000 shares;
     issued 10,482,000 shares;
     outstanding 9,013,000 shares              $157            $157
    Paid-in capital                             180             180
    Retained earnings                           154             154
                                           -------------------------

      Total common stock equity                 491             491
    Preferred stock                              20              20
    Long-term debt                              420             420
                                           -------------------------
      Total capitalization                      931             931
                                           -------------------------


 CURRENT LIABILITIES
    Long-term debt due within twelve months       0               0
    Advances from affiliates                     70              70
    Payable to affiliates                        21              21
    Accounts payable                             28              28
    Payables to customers                        15              15
    Accrued taxes                                17              17
    Accrued interest                             11              11
    Other                                         5               5
                                           -------------------------
                                                167             167
                                           -------------------------

 DEFERRED CREDITS
   Accumulated deferred income taxes            252             252
    Investment tax credits                       42              42
    Income tax related regulatory
      liabilities, net                           45              45
    Other                                         8               8
                                           -------------------------
                                                347             347
                                           -------------------------

                                             $1,445      $0  $1,445
                                           =========================

<PAGE> 
 PUBLIC SERVICE COMPANY OF OKLAHOMA

 STATEMENT OF INCOME
 FOR THE TWELVE MONTHS MARCH 31, 1997
 UNAUDITED
 (Millions)



 ELECTRIC OPERATING REVENUE                    $743
                                           ---------


 OPERATING EXPENSES AND TAXES
   Fuel                                         291
   Purchased power                               44
   Other operating                              122
   Maintenance                                   38
   Depreciation and amortization                 78
   Taxes, other than income                      28
   Income taxes                                  38
                                           ---------

                                                639
                                           ---------

 OPERATING INCOME                               104
                                           ---------

 OTHER INCOME AND DEDUCTIONS                    (35)
                                           ---------

 INCOME BEFORE INTEREST CHARGES                  69
                                           ---------

 INTEREST CHARGES
   Interest on long-term debt                    31
   Interest on short-term debt and other          4
                                           ---------

                                                 35
                                           ---------


 NET INCOME                                      34

 PREFERRED STOCK DIVIDENDS                        1
                                           ---------

 NET INCOME FOR COMMON STOCK                    $33
                                           =========


<PAGE> 
 PUBLIC SERVICE COMPANY OF OKLAHOMA

 STATEMENT OF RETAINED EARNINGS
 FOR THE TWELVE MONTHS MARCH 31, 1997
 UNAUDITED
 (Millions)



 RETAINED EARNINGS AT MARCH 31, 1996           $149
 Add: Net income (loss) for common stock         33
                                           ---------

                                                182
 Deduct: Common stock dividends                  28
                                           ---------

 RETAINED EARNINGS AT MARCH 31, 1997           $154
                                           =========

<PAGE> 
 PUBLIC SERVICE COMPANY OF OKLAHOMA

 STATEMENT OF LONG-TERM DEBT OUTSTANDING
 AS OF MARCH 31, 1997
 UNAUDITED
 (Millions)


 First mortgage bonds -
   Series K, 7-1/4%, due January 1, 1999                $25
   Series L, 7-3/8%, due March 1, 2002                   30
   Series S, 7-1/4%, due July 1, 2003                    65
   Series T, 7-3/8%, due December 1, 2004                50
   Series U, 6-1/4%, due April 1, 2003                   35
   Series V, 7-3/8%, due April 1, 2023                  100
   Series W, 6-1/2%, due June 1, 2005                    50
 Long-term note
   Series A-1, 5.89%, due December 15, 2000              10
   Series A-2, 5.91%, due March 1, 2001                   6
   Series A-3, 6.02%, due March 1, 2001                   5
   Series A-4, 6.02%, due March 1, 2001                   9
   Series A-5, 6.43%, due March 30, 2000                 10
 Installment sales agreements -
   Pollution control bonds
     Series A, 5.9%, due December 1, 2007                35
     Series 1996 6.0%, due June 1, 2020                  12 *
 Unamortized discount                                    (4)
 Unamortized costs of reacquired debt                   (18)
                                                    --------

*   Rounded down from 12,660,000                       $420
                                                    --------


<PAGE> 
 PUBLIC SERVICE COMPANY OF OKLAHOMA

 STATEMENT OF PREFERRED STOCK OUTSTANDING
 AS OF MARCH 31, 1997
 UNAUDITED
 (Millions)


   4.00% Series,    97,900 shares                       $10
   4.24% Series,   100,000 shares                        10
                                                    --------
                                                        $20
                                                    --------
<PAGE> 
 PUBLIC SERVICE COMPANY OF OKLAHOMA

 PRO FORMA ADJUSTMENTS TO BALANCE SHEETS
 AS OF MARCH 31, 1997
 UNAUDITED
 (Thousands)
                                                      DR      CR
                                                    ----------------

 Deferred charges and other assets                    3,036
     Cash                                                     3,036

  (record PSO's equity investment in Scientech's common stock:
    70,000 Class A shares; 436,000 Class B shares)


<PAGE> 
 PUBLIC SERVICE COMPANY OF OKLAHOMA

 STATEMENT OF CHANGES

On April 24, 1997,  PSO's business trust, PSO Capital I, sold to underwriters in
a negotiated  offering $75 million,  8.00% Series A, Trust Originated  Preferred
Securities due April 2037. The proceeds from the sale of these  securities  were
used  by  PSO  to  reimburse   PSO's   treasury  for  the  cost  of  reacquiring
approximately $14.5 million of 4.00% Series and 4.24% Series preferred stock, to
provide working capital and for other general corporate purposes.  Settlement of
the  transaction  occurred  on May 2, 1997.  PSO  Capital I will be treated as a
subsidiary  of PSO  whose  only  assets  are  the  approximately  $73.3  million
principal subordinated debentures issued by PSO. In addition to PSO's obligation
under the  subordinated  debentures,  PSO has also agreed to a obligation  which
represents  a  full  and  unconditional  guarantee  of  PSO  Capital  I's  trust
obligations.


With the exception of the trust preferred security transaction  described above,
there have been no  significant  changes in the  financial  statements of Public
Service  Company of Oklahoma  subsequent  to March 31,  1997,  other than in the
ordinary course of business.  See PSO's Quarterly  Report on Form 10-Q (included
with CSW's Combined  Quarterly  Report on Form 10-Q) for the quarter ended March
31, 1997.



<PAGE> 
 PUBLIC SERVICE COMPANY OF OKLAHOMA

 CAPITALIZATION RATIOS
 PER BOOKS AND PRO FORMA
 AS OF MARCH 31, 1997
                                            Common
                                            Stock   Preferred  Long-term
                                            Equity   Stock        Debt
                                           ------------------------------

   Per books                                 52.7%    2.1%       45.1%

   Pro forma (NO CHANGE)                     52.7%    2.1%       45.1%


<PAGE> 
 PUBLIC SERVICE COMPANY OF OKLAHOMA

 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



The notes to  consolidated  financial  statements  included  in  Public  Service
Company of Oklahoma's  Annual Report on Form 10-K (included in Central and South
West  Corporation's  1996  Combined  Annual  Report  on Form  10-K)  are  hereby
incorporated by reference and made a part of this report.

                                                       Page
                                                     Reference

 1996 Combined Annual Report on Form 10-K     pages 2-39 through 2-71


<TABLE> <S> <C>

<ARTICLE>  OPUR1
<CIK>  0000081027
<NAME>  PUBLIC SERVICE COMPANY OF OKLAHOMA
<MULTIPLIER> 1,000
       
<S>                             <C>                      <C>
<PERIOD-TYPE>                   3-MOS                    3-MOS
<FISCAL-YEAR-END>                            DEC-31-1997            DEC-31-1997
<PERIOD-END>                                 MAR-31-1997            MAR-31-1997
<BOOK-VALUE>                                    PER-BOOK              PRO-FORMA
<TOTAL-NET-UTILITY-PLANT>                      1,299,535              1,299,535
<OTHER-PROPERTY-AND-INVEST>                       12,769                 15,805
<TOTAL-CURRENT-ASSETS>                            82,755                 79,719
<TOTAL-DEFERRED-CHARGES>                           4,089                  4,089
<OTHER-ASSETS>                                    45,700                 45,700
<TOTAL-ASSETS>                                 1,444,848              1,444,848
<COMMON>                                         157,230                157,230
<CAPITAL-SURPLUS-PAID-IN>                        180,000                180,000
<RETAINED-EARNINGS>                              153,502                153,502
<TOTAL-COMMON-STOCKHOLDERS-EQ>                   490,732                490,732
                                  0                      0
                                       19,826                 19,826
<LONG-TERM-DEBT-NET>                             380,681                380,681
<SHORT-TERM-NOTES>                                70,174                 70,174
<LONG-TERM-NOTES-PAYABLE>                         40,000                 40,000
<COMMERCIAL-PAPER-OBLIGATIONS>                         0                      0
<LONG-TERM-DEBT-CURRENT-PORT>                          0                      0
                              0                      0
<CAPITAL-LEASE-OBLIGATIONS>                            0                      0
<LEASES-CURRENT>                                       0                      0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                   443,435                443,435
<TOT-CAPITALIZATION-AND-LIAB>                  1,444,848              1,444,848
<GROSS-OPERATING-REVENUE>                        155,165                      0
<INCOME-TAX-EXPENSE>                               2,972                      0
<OTHER-OPERATING-EXPENSES>                       135,515                      0
<TOTAL-OPERATING-EXPENSES>                       138,487                      0
<OPERATING-INCOME-LOSS>                           16,678                      0
<OTHER-INCOME-NET>                                  (162)                     0
<INCOME-BEFORE-INTEREST-EXPEN>                    16,516                      0
<TOTAL-INTEREST-EXPENSE>                           8,753                      0
<NET-INCOME>                                       7,763                      0
                          204                      0
<EARNINGS-AVAILABLE-FOR-COMM>                      7,559                      0
<COMMON-STOCK-DIVIDENDS>                               0                      0
<TOTAL-INTEREST-ON-BONDS>                          7,011                      0
<CASH-FLOW-OPERATIONS>                            (1,654)                     0
<EPS-PRIMARY>                                       0.00                   0.00
<EPS-DILUTED>                                       0.00                   0.00
        



</TABLE>










                            STOCK PURCHASE AGREEMENT


                                      AMONG


              DR. LAWRENCE J. YBARRONDO AND CERTAIN RELATED TRUSTS
                               AND FAMILY MEMBERS


                                       AND


                       PUBLIC SERVICE COMPANY OF OKLAHOMA


                            Dated as of June 2, 1997






<PAGE>



                                TABLE OF CONTENTS

ARTICLE I                  DEFINITIONS


ARTICLE II                 PURCHASE AND SALE OF PURCHASED SECURITIES

SECTION 2.1                Purchase and Sale of Purchased Securities
SECTION 2.2                Closing
SECTION 2.3                Escrow


ARTICLE III                REPRESENTATIONS AND WARRANTIES OF THE
                           SELLERS

SECTION 3.1                Organization and Good Standing
SECTION 3.2                Authorization
SECTION 3.3                Enforceability
SECTION 3.4                Capitalization
SECTION 3.5                Subsidiaries
SECTION 3.6                Consents
SECTION 3.7                Reports and Financial Statements; Undisclosed 
                           Liabilities
SECTION 3.8                Absence of Certain Developments
SECTION 3.9                Liens
SECTION 3.10               Indebtedness to and from Officers, Directors and 
                           Others
SECTION 3.11               Insurance
SECTION 3.12               Tax Returns
SECTION 3.13               [Intentionally Left Blank]
SECTION 3.14               Title to Assets
SECTION 3.15               Material Contracts and Obligations
SECTION 3.16               Real Property - Owned
SECTION 3.17               Real and Personal Property - Leased
SECTION 3.18               Proprietary Rights
SECTION 3.19               Necessary Property; Condition of Property
SECTION 3.20               Necessary Licenses and Permits
SECTION 3.21               Compliance with Law
SECTION 3.22               Environmental Compliance
SECTION 3.23               Litigation
SECTION 3.24               No Material Adverse Changes
SECTION 3.25               Employee Benefit Plans
SECTION 3.26               Withholdings; Contracts; Labor Relations
SECTION 3.27               Governmental Regulations
SECTION 3.28               Corporate Documents, Books and Records
SECTION 3.29               Broker Costs
SECTION 3.30               Disclosure


<PAGE>



SECTION 3.31               Certain Agreements of Officers and Employees
SECTION 3.32               Registration Rights


ARTICLE IV                 PURCHASER'S REPRESENTATIONS

SECTION 4.1                Investment Intent
SECTION 4.2                Authorization
SECTION 4.3                Enforceability
SECTION 4.4                Exemption
SECTION 4.5                Restrictions on Resale
SECTION 4.6                Broker Costs


ARTICLE V                  CONDITIONS TO PURCHASER'S OBLIGATION
                           TO PURCHASE

SECTION 5.1                Related Agreements
SECTION 5.2                Charter Documents; Good Standing Certificates
SECTION 5.3                Proof of Corporate Action
SECTION 5.4                Incumbency Certificate
SECTION 5.5                Legal Opinions
SECTION 5.6                Legality; Governmental and Other Authorizations
SECTION 5.7                Due Diligence
SECTION 5.8                General


ARTICLE VI                 CONDITIONS TO THE SELLERS' OBLIGATIONS

SECTION 6.1                Representations
SECTION 6.2                Related Agreements


ARTICLE VII                OPTION

SECTION 7.1                Grant of Option
SECTION 7.2                Exercise of Option
SECTION 7.3                Transfer or Shares
SECTION 7.4                No Rights as Shareholders
SECTION 7.5                Transfer or Assignment
SECTION 7.6                Adjustments for Stock Splits, Stock Dividends,
                           Recapitalizations, Automatic Conversion, etc.
SECTION 7.7                Adjustment for Reorganization, onsolidation, 
                           Mergers, etc.
SECTION 7.8                Cooperation



                                                      -ii-

<PAGE>





ARTICLE VIII               INDEMNITY

SECTION 8.1                Indemnification
SECTION 8.2                Survival of Obligations


ARTICLE IX                 GENERAL

SECTION 9.1                Notice
SECTION 9.2                Survival and Termination of Covenants,
                           Agreements, Representations and Warranties
SECTION 9.3                Amendments and Waivers
SECTION 9.4                Entire Agreement
SECTION 9.5                Governing Law
SECTION 9.6                Jurisdiction and Venue
SECTION 9.7                Successors and Assigns
SECTION 9.8                Headings
SECTION 9.9                Attorneys' Fees
SECTION 9.10               Severability
SECTION 9.11               Pronouns and Plurals
SECTION 9.12               Further Action
SECTION 9.13               Waiver
SECTION 9.14               Counterparts
SECTION 9.15               Construction
SECTION 9.16               Expenses


                                LIST OF EXHIBITS

EXHIBIT A                  Form of Articles of Incorporation
EXHIBIT B                  Form of Escrow Agreement
EXHIBIT C                  Form of Shareholders' Agreement
EXHIBIT D                  Form of Registration Rights Agreement
EXHIBIT E                  Form of Opinion of Sellers' Counsel
EXHIBIT F                  Form of Opinion of Company's Counsel


                                    LIST OF SCHEDULES

SCHEDULE 2.1               Sellers
SCHEDULE 3.4(a)            Capitalization and Ownership
SCHEDULE 3.4(b)            Outstanding Rights and Options
SCHEDULE 3.5               Subsidiaries
SCHEDULE 3.6               Consents



                                                      -iii-

<PAGE>



SCHEDULE 3.7               Financial Statements
SCHEDULE 3.8               Certain Developments
SCHEDULE 3.9               Liens
SCHEDULE 3.10              Indebtedness to Officers and Directors
SCHEDULE 3.11              Insurance-Exceptions
SCHEDULE 3.15              Contracts
SCHEDULE 3.17              Real and Personal Property Leased
SCHEDULE 3.18              Proprietary Rights-Exceptions
SCHEDULE 3.20              Licenses-Exceptions
SCHEDULE 3.21(a)           Violations of Law
SCHEDULE 3.21(b)           Licenses
SCHEDULE 3.23              Litigation-Exceptions
SCHEDULE 3.24              Material Adverse Changes
SCHEDULE 3.25              Employee Benefit Plans
SCHEDULE 3.26              Employment Agreements
SCHEDULE 3.31(b)           Certain Departing Employees
SCHEDULE 3.31(c)           Key Employees
SCHEDULE 7.7               Option Securities Owned by Sellers




                                                      -iv-



                                                                 EXHIBIT 5
                            STOCK PURCHASE AGREEMENT

         STOCK PURCHASE  AGREEMENT (the  "Agreement") as of June 2, 1997,  among
DR.  LAWRENCE J.  YBARRONDO and his Related  Trusts and Family Members listed on
the signature page hereto  (collectively  the  "Sellers",  and  individually,  a
"Seller"); and PUBLIC SERVICE COMPANY OF OKLAHOMA, an Oklahoma corporation ("the
Purchaser").

                                   WITNESSETH:

         WHEREAS, Sellers own, in the aggregate,  1,018,329 shares of the Common
Stock, par value, $0.01 per share, of SCIENTECH, Inc., an Idaho Corporation (the
"Company"), all of which will be (upon the effectiveness of the amendment to the
Company's  Articles of  Incorporation  described  herein)  Class A Voting Common
Stock; and

         WHEREAS, the Sellers wish to sell to Purchaser, and Purchaser wishes to
purchase  from  Sellers,  an aggregate of 506,000  shares of Common Stock of the
Company, of which amount 70,000 shares shall be Class A Voting Common Stock, and
436,000 shares shall be of Class B Nonvoting Common Stock; and

         WHEREAS,  Purchaser wishes to receive from Sellers, and Sellers wish to
grant to Purchaser,  an option to purchase  206,000  shares of Common Stock from
Sellers,  not later than  September 2, 1998,  certain  additional  shares of the
Common Stock of the Company;

         NOW  THEREFORE,  in  consideration  of  the  premises  and  the  mutual
covenants contained in this Agreement, the parties agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

         For all purposes of this  Agreement the following  terms shall have the
meanings set forth in this Article I:

         "Affiliate"  means,  as applied to the  Company or any other  specified
Person,  any Person directly or indirectly  controlling,  controlled by or under
direct or indirect common control with the Company (or other  specified  Person)
and shall also include (a) any Person who is a director or  beneficial  owner of
at least 5% of the then outstanding  equity  securities of the Company (or other
specified Person) and Family Members of any such Person, (b) any Person of which
the Company (or other  specified  Person) or an Affiliate  (as defined in clause
(a)  above) of the  Company  (or other  specified  Person)  shall,  directly  or
indirectly,  either beneficially own at least 10% of the then outstanding equity
securities or constitute at least a 10% equity participant,  and (c) in the case
of a specified Person who is an individual, any Family Member of such Person.

         "Articles of Incorporation"  means the Amended and Restated Articles of
Incorporation of the Company in the form of Exhibit A.


<PAGE>





         "Balance Sheet" means the balance sheet referred to in the definition 
of "Financial Statements".

         "Balance Sheet Date" means the date of the latest Balance Sheet.

         "Broker  Costs"  means  any and all  costs,  fees and  expenses  of any
broker,  finder or placement  agent  incurred by the Sellers or the Purchaser in
connection with the transactions contemplated herein.

         "Capital  Stock"  means,  as to any Person that is a  corporation,  the
authorized  shares of such  Person's  capital  stock,  including  all classes of
common,  preferred,  voting and nonvoting  capital stock,  and, as to any Person
that is not a corporation  or an  individual,  the  ownership  interests in such
Person, including, without limitation, the right to share in profits and losses,
the  right to  receive  distributions  of cash and  property,  and the  right to
receive  allocations of items of income,  gain,  loss,  deduction and credit and
similar items from such Person,  whether or not such interests include voting or
similar  rights  entitling  the holder  thereof to  exercise  control  over such
Person.

         "Class A Stock" means the Class A Voting Common Stock,  par value $0.01
per share, of the Company.

         "Class B Stock"  means the Class B Nonvoting  Common  Stock,  par value
$0.01 per share, of the Company.

         "Closing" has the meaning given such term in Section 2.2 of this 
Agreement.

         "Closing  Date" has the meaning  given such term in Section 2.2 of this
Agreement.

         "Code" means the Internal Revenue Code of 1986, as amended.

         "Common Stock" means the Class A Stock and the Class B Stock.

         "Company" means SCIENTECH,  Inc., an Idaho  corporation.  It shall also
include its predecessor companies and any Subsidiaries which may now exist or be
established in the future.

        "Contracts" has the meaning set forth in Section 3.15 of this Agreement.

         "Employee  Benefit  Plan" means any  employee  benefit  plan within the
meaning of ss.3(3) of ERISA  maintained or  contributed to by the Company or any
ERISA Affiliate, other than a Multiemployer Plan.

         "Environmental Laws" has the meaning given such term in Section 3.22(c)
of this Agreement.




                                                      -2-

<PAGE>



         "ERISA" means the Employee  Retirement Income Security Act of 1974, any
successor statute of similar import,  and the rules and regulations  thereunder,
collectively, and from time to time amended and in effect.

         "ERISA  Affiliate"  means  any  Person  which  is  treated  as a single
employer with the Company under ss. 414 of the Code.

         "Escrow Agent" Shall mean that individual identified as Escrow Agent in
the Escrow Agreement.

         "Escrow Agreement" means that Escrow Agreement among Sellers, Purchaser
and the Escrow Agent in the form of Exhibit B hereof.

         "Escrow  Shares"  means  506,000  shares of Common  Stock  deposited by
Sellers with the Escrow Agent  pursuant to the Escrow  Agreement and Section 2.3
hereof.

         "Family Member" means, as applied to any individual,  such individual's
spouse,  or such  individual's  child,  and each trust created for the exclusive
benefit of one or more of them.

         "Financial Statements" means the audited balance sheet and statement of
income of the  Company  for the  fiscal  year  ended  January  31,  1996 and the
unaudited  related balance sheet as of March 28, 1997 (the "Balance  Sheet") and
statement of income for the period then ended for the Company.

         "Founder" means Dr. Lawrence J. Ybarrondo or any of his Family Members.

         "Generally accepted  accounting  principles" or "GAAP" means accounting
principles  which are (a) consistent with the principles  promulgated or adopted
by the  Financial  Accounting  Standards  Board and its  predecessors  and other
recognized principle setting bodies, in effect from time to time, (b) applied on
a basis  consistent  with prior  periods,  and (c) such that a certified  public
accountant would, insofar as the use of accounting  principles is pertinent,  be
in a  position  to base an  opinion  as to  financial  statements  in which such
principles have been properly applied.

         "Guaranteed  Pension  Plan" means any  employee  pension  benefit  plan
within  the  meaning of ss.3(2) of ERISA  maintained  or  contributed  to by the
Company  or any  ERISA  Affiliate,  the  benefits  of which  are  guaranteed  on
termination  in  full or in part by the  Pension  Benefit  Guaranty  Corporation
pursuant to Title IV of ERISA, other than a Multiemployer Plan.

         "Hazardous  Substance"  has the  meaning  given  such  term in  Section
3.22(b) of this Agreement.

         "Indebtedness" means all obligations,  contingent and otherwise,  which
in accordance  with GAAP should be classified on the obligor's  balance sheet as
liabilities,  or to  which  reference  should  be  made  by  footnotes  thereto,
including without limitation, in any event and



                                                      -3-

<PAGE>



whether or not so  classified:  (i) all debt and similar  monetary  obligations,
whether  direct or  indirect;  (ii) all  liabilities  secured  by any  mortgage,
pledge,  security  interest,  lien,  charge  or other  encumbrance  existing  on
property owned or acquired subject thereto, whether or not the liability secured
thereby shall have been assumed;  (iii) all guaranties,  endorsements  and other
contingent  obligations whether direct or indirect in respect of Indebtedness or
performance  of others,  including  any  obligation to supply funds to or in any
manner  to  invest  in,  directly  or  indirectly,   the  debtor,   to  purchase
Indebtedness,  or to assure the owner of Indebtedness  against loss,  through an
agreement  to purchase  goods,  supplies or services for the purpose of enabling
the debtor to make payment of the Indebtedness  held by such owner or otherwise,
and (iv) obligations to reimburse issuers of any letters of credit.

         "Intangible Property" has the meaning given such term in Section 3.18
hereof.

         "Licenses" has meaning given such term in Section 3.20 hereof.

         "Lien" means (a) any encumbrance,  mortgage,  pledge,  lien,  charge or
other  security  interest  of any  kind  upon  any  property  or  assets  of any
character,  or upon the income or profits  therefrom;  (b) any acquisition of or
agreement to have an option to acquire any  property or assets upon  conditional
sale or other title  retention  agreement,  device or  arrangement  (including a
capitalized  lease); or (c) any sale,  assignment,  pledge or other transfer for
security of any accounts,  general intangibles or chattel paper, with or without
recourse.

         "Material  Adverse  Effect" has the meaning  given such term in Section
3.24 hereof.

         "Multiemployer  Plan" means a multiemployer  plan within the meaning of
Section 3(37) of ERISA.

         "Option  Securities"  means those shares of Common Stock of the Company
owned by Sellers which the  Purchaser has an option to buy,  pursuant to Article
VII of this Agreement.

         "Per Share  Price"  has the  meaning  given  such term in  Section  2.1
hereof.

         "Person" means an individual,  partnership,  corporation,  association,
trust,  joint  venture,   unincorporated   organization,   and  any  government,
governmental department or agency or political subdivision thereof.

         "Purchased  Securities"  means an aggregate of 70,000 shares of Class A
Stock and  436,000  shares  of Class B Stock to be  purchased  pursuant  to this
Agreement.

         "Purchase Price" has the meaning given such term in Section 2.1.

         "Purchaser" means Public Service Company of Oklahoma, an Oklahoma 
corporation.




                                                      -4-

<PAGE>



         "Registration Rights Agreement" means the Registration Rights Agreement
dated as of the date  hereof  among the  Company,  the  Purchaser,  and  certain
shareholders of the Company in the form of Exhibit D hereto.

         "Related Agreements" means the Articles of Incorporation, Escrow 
Agreement, Shareholders' Agreement, and Registration Rights Agreement.

         "Related Trusts" shall mean, collectively, the Ybarrondo Family Trust 
B, the Ybarrondo Family Trust C-1, and the Ybarrondo Family Trust C-2, each 
with Dr. L.J.Ybarrondo as Trustee.

         "Securities  Act" means the Securities Act of 1933, as amended,  or any
successor  federal statute,  and the rules and regulations of the Securities and
Exchange Commission thereunder, all as the same shall be in effect at the time.

         "Sellers" shall mean the persons listed on Schedule 2.1.

         "Shareholders' Agreement" means the Shareholders' Agreement dated as of
the date  hereof  among the  Sellers,  certain  additional  shareholders  of the
Company, the Company and Purchaser, in the form of Exhibit C hereto.

         "Subsidiary"  means any Person which the Company now or hereafter shall
at the time  own,  directly  or  indirectly  through  a  subsidiary,  at least a
majority  of the  outstanding  capital  stock  (or  other  beneficial  interest)
entitled to vote generally;  and the term "Subsidiaries"  shall mean all of such
Persons collectively.

         "Taxes" means (A) all net income, gross income, gross receipts,  sales,
use, ad valorem, transfer, franchise,  profits, license,  withholding,  payroll,
employment, excise, severance, stamp, occupation,  premium, property or windfall
profits taxes, or other taxes of any kind whatsoever, together with any interest
and any penalties,  additions to tax or additional amounts imposed by any taxing
authority  (domestic or foreign) upon the Company with respect to all periods or
portions thereof ending on or before the date hereof and/or (B) any liability of
the  Company  for the  payment  of any  amounts  of the  type  described  in the
immediately  preceding clause (A) as a result of being a member of an affiliated
or combined group.

                                   ARTICLE II

                    PURCHASE AND SALE OF PURCHASED SECURITIES

         2.1 Purchase and Sale of  Purchased  Securities.  Subject to all of the
terms  and  conditions  hereof  and  in  reliance  on  the  representations  and
warranties set forth or referred to herein,  at the Closing the Purchaser agrees
to  purchase  and the  Sellers  agree to sell the number of shares of  Purchased
Securities  set forth  opposite each Seller's name in Schedule 2.1, at the price
of Six Dollars ($6.00) per share (the "Per Share Price"),  or an aggregate price
of Three  Million  Thirty  Six  Thousand  Dollars  ($3,036,000)  (the  "Purchase
Price").



                                                      -5-

<PAGE>




         2.2  Closing.  The closing of the  purchase  and sale of the  Purchased
Securities  (the  "Closing")  will take place at the offices of the Company,  at
8:00 a.m.  Mountain Time on Monday,  June 2, 1997, or at such other place,  time
and date as the  parties  hereto may agree  upon (the  "Closing  Date").  At the
Closing,  the  Sellers  shall  deliver to the  Escrow  Agent,  the  certificates
representing  the  Purchased  Securities,  properly  endorsed  in  the  name  of
Purchaser,  and the  Purchaser  shall  deliver to the Escrow  Agent the Purchase
Price by wire transfer,  both to be held by the Escrow Agent, as provided in the
Escrow Agreement in the form of Exhibit B hereto.

         2.3 Escrow.  The obligation of the Purchaser to consummate the purchase
and the sale of the  Purchased  Securities  is  subject to and  contingent  upon
approval by the  Securities  and Exchange  Commission  ("SEC")  under the Public
Utility Holding Company Act, of 1935, as amended,  of the transactions  provided
for in this Agreement  without the imposition of any additional  requirements or
conditions  deemed to be  material  and  adverse  by the  Purchaser  in its sole
discretion.  Pending  consideration  by  the  SEC  of an  application  for  such
approval,  Purchaser  and Sellers  agree to deposit the  Purchase  Price and the
Escrow  Shares  with the  Escrow  Agent  pursuant  to the  terms  of the  Escrow
Agreement.  During the term of the Escrow  Agreement,  Sellers  shall retain all
voting,  dividend  and  distribution  or other  rights as a  shareholder  of the
Company with respect to the Escrow Shares.

                  (a) In the event the SEC  disapproves of the purchase and sale
hereunder and the transactions contemplated hereby, or in the event no approval,
meeting  the  requirements  set forth  above in this  Section  2.3, or denial is
received from the SEC within 75 days from the date hereof (or such later date as
may be agreed to in writing by Purchaser and Dr. L.J. Ybarrondo and communicated
to the Escrow Agent),  (i) the Escrow Shares shall be returned to Sellers,  (ii)
the Purchase Price shall be returned to Purchaser,  (iii) this Agreement and all
Related  Agreements shall be rescinded,  and (iv) neither  Purchaser nor Sellers
shall have any liability to the other whatsoever,  except as otherwise  provided
in Section 9.16.

                  (b) In the event of SEC approval, meeting the requirements set
forth above in this  Section 2.3, of the  purchase  and sale  hereunder  and the
transactions  contemplated  hereby is completed within the time period described
above (i)  Escrow  Agent  shall  cause the  Escrow  Shares  to be  converted  to
Purchased Securities in the name of the Purchaser, (ii) the Purchased Securities
shall be delivered to the  Purchaser,  (iii) the Purchase Price shall be paid to
Sellers,  and (iv) this Agreement and all Related  Agreements  shall continue in
full force and effect.

                                   ARTICLE III

                  REPRESENTATIONS AND WARRANTIES OF THE SELLERS

         In order to induce  the  Purchaser  to enter into this  Agreement,  the
Sellers  hereby  make  the  following  representations  and  warranties  to  the
Purchaser, jointly and severally:

         3.1 Organization and Good Standing. The Company is duly organized, 
validly existing and in good standing in its jurisdiction of  incorporation  
and is duly qualified as a foreign


                                                      -6-

<PAGE>



corporation  and authorized to do business in all other  jurisdictions  in which
the nature of its business or property  makes such  qualification  necessary and
where the failure to so qualify would have a Material Adverse Effect.

         3.2 Authorization. With respect to each Seller, the execution, delivery
and performance by the Seller of this Agreement and of each Related Agreement to
which  the  Seller  is a party,  and the  sale by the  Seller  of the  Purchased
Securities hereunder:  (a) are within the Seller's power and authority; (b) have
been  duly  authorized  by all  necessary  action;  and (c) do not and  will not
conflict with or result in any breach of any law, regulation,  order,  judgment,
writ, injunction,  license,  permit, agreement or instrument to which the Seller
is subject.

         3.3  Enforceability.  With respect to each Seller,  the  execution  and
delivery by the Seller of this  Agreement and of each of the Related  Agreements
to which the Seller is a party,  will result in legally  binding  obligations of
the Seller,  enforceable  against the Seller in accordance  with the  respective
terms and provisions hereof and thereof.

         3.4      Capitalization.

                  (a) As soon as is reasonably  practicable  after Closing,  the
Company shall amend its Articles of Incorporation in the form of Exhibit A. Upon
the  filing of  Exhibit  A with the Idaho  Secretary  of State,  the  authorized
Capital Stock of the Company shall consist solely of 7,000,000  shares of Common
Stock,  $0.01 par value per share,  consisting  of  6,000,000  shares of Class A
Voting  Common Stock and  1,000,000  shares of Class B Nonvoting  Common  Stock.
Schedule 3.4(a) sets forth a table indicating the  capitalization of the Company
immediately  prior to the execution of this Agreement.  All of the issued shares
of Capital  Stock of the Company  are issued and owned by the Persons  listed on
Schedule  3.4(a)  and  have  been  duly  authorized,   are  validly  issued  and
outstanding and are fully paid and non-assessable.

                  (b)  Except  as set  forth on  Schedule  3.4(b),  there are no
material outstanding rights (either preemptive or other) or options to subscribe
for or purchase from the Company,  or any material  warrants or other agreements
providing  for or  requiring  the  issuance  or  purchase by the Company of, any
Capital  Stock or any  securities  convertible  into or  exchangeable,  for,  or
exercisable  into, its Capital Stock or any material  voting trusts,  proxies or
agreements  relating to the voting of the Company's  Capital Stock. For purposes
of this Section 3.4(b), "material" shall mean any agreement or agreements which,
individually or in the aggregate, would affect more than 5,000 shares of Capital
Stock of the Company.

         3.5      Subsidiaries.  All the Company's Subsidiaries are listed on 
Schedule 3.5.

         3.6 Consents.  Except as set forth on Schedule 3.6, except as otherwise
required  under  applicable  federal and state  Securities  Laws, the execution,
delivery and  performance  by the Sellers of this  Agreement and of each Related
Agreement to which they are parties, the sale of the Purchased  Securities,  the
grant of the  Option,  and the sale of the  Option  Securities  pursuant  to the
exercise of the Option,  do not and will not require the approval or consent of,
or any filing with, any governmental authority or agency or any other Person.



                                                      -7-

<PAGE>




         3.7      Reports and Financial Statement; Undisclosed Liabilities.

                  (a)      Complete and correct copies of the Financial 
Statements are attached hereto as Schedule 3.7.

                  (b) Except as otherwise  specifically  disclosed therein, each
of the audited Financial Statements as of January 31, 1997 and for the year then
ended was prepared in accordance  with GAAP applied on a basis  consistent  with
prior periods  except as otherwise  stated  therein;  each of the balance sheets
included in the audited  Financial  Statements  fairly  presents  the  financial
condition  of the Company as at the close of business on the date  thereof;  and
each of the statements of income  included in the audited  Financial  Statements
fairly  presents the results of  operations of the Company for the fiscal period
then ended. The Company has no liabilities or obligations of any nature, whether
absolute,  accrued,  contingent or otherwise,  which are not fully  reflected or
reserved against in audited  Financial  Statements,  except for liabilities that
may have arisen in the ordinary and usual course of business and consistent with
past  practice and that  individually  or in the aggregate do not have and could
not reasonably be expected to have a Material Adverse Effect.

                  (c) To the best of the Sellers' knowledge, except as otherwise
specifically  disclosed  therein,  the  Balance  Sheet of the  Company  has been
prepared by management of the Company in good faith and in accordance with GAAP,
consistently  applied. To the best of the Sellers'  knowledge,  the Company will
not have any  material  liabilities,  contingent  or  otherwise,  which  are not
referred to in such Balance Sheet or in the notes thereto other than liabilities
incurred in the  ordinary  course of the  Company's  business  since the Balance
Sheet Date,  and  liabilities  not required to be disclosed in  accordance  with
GAAP.

                  (d) Since the Balance  Sheet Date,  there has been no material
adverse change in the business,  assets, financial condition or prospects of the
Company.

         3.8      Absence of Certain Developments.  Except for entering into 
this Agreement and except as disclosed on Schedule 3.8 hereof, since the
Balance Sheet Date:

                  (a)  Except  for  minor   variations   which  do  not,  either
individually or in the aggregate,  have a material adverse effect on Purchaser's
rights, the Company has not whether or not in the ordinary course of business:

                           (i)      issued any Capital Stock or other equity 
         interest or any right, options or warrants with respect thereto;

                           (ii) declared,  set aside,  paid to a reserve fund or
         made any  payment  or  distribution  of cash or other  property  to its
         stockholders or equity holders with respect to any class of its Capital
         Stock or other  equity  interest or purchased or redeemed any shares of
         its Capital Stock or other equity interests;

                           (iii)    suffered any substantial loss to any of its 
         material assets;



                                                      -8-

<PAGE>




                           (iv)  made any  increases  in the base  compensation,
         bonuses,  paid  vacation  time  allowed  or  fringe  benefits  for  its
         directors,  officers,  partners,  employees or consultants,  except for
         normal  periodic  increases in base  compensation  for  employees  made
         pursuant to established compensation policies;

                           (v) suffered  damage,  destruction  or other casualty
         loss, or forfeiture of, any property or assets,  whether or not covered
         by  insurance,  which has had or may  reasonably  be expected to have a
         Material Adverse Effect;

                           (vi)     made any capital expenditures, additions or 
         improvements or commitments for the same, except those which do not 
         exceed $500,000 in the aggregate;

                           (vii)  entered  into  any  contract,   commitment  or
         agreement  under which it has  outstanding  Indebtedness  for  borrowed
         money or for the  deferred  purchase  price of  property  in  excess of
         $500,000, or has the right or obligation to incur any such indebtedness
         or  obligation,  or made any loan or advance  to any Person  other than
         advances to employees for business  expenses not  exceeding  $20,000 in
         the aggregate;

                           (viii) paid any bonuses,  deferred or  otherwise,  or
         deferred any compensation to any of its directors,  officers,  partners
         or employees except as reflected in the Financial Statements;

                           (ix)     made any material change in accounting 
         procedures, policies or practices;

                           (x)  mortgaged  or pledged any of its  properties  or
         assets,  tangible or intangible,  or subjected them to any Lien, except
         Liens for current  property  taxes not yet due and payable and Liens on
         personal   property  created  in  connection  with  equipment   leases,
         installment purchase contracts,  conditional sales contracts,  purchase
         money mortgages and the like to secure Indebtedness incurred to acquire
         property not exceeding $500,000 in the aggregate;

                           (xi)  entered  into  any  agreement  or   arrangement
         granting any rights to purchase or lease any of its assets,  properties
         or rights or  requiring  the  consent  of any  Person to the  transfer,
         assignment or lease of any such assets, properties or rights; or

                           (xii)    entered into any agreement or understanding 
         to do any of the foregoing.

                  (b)      Other than in the ordinary course of business 
         consistent with past practice, the Company has not:

                           (i)      sold, leased, subleased, assigned or 
         transferred any of its tangible or intangible properties or assets, or 
         canceled, waived or compromised any debts or claims;



                                                      -9-

<PAGE>




                           (ii)   entered into any other material transaction, 
         or any amendment of any contract, lease, agreement or license which is 
         material to its business; or

                           (iii)    entered into any agreement or understanding 
         to do any of the foregoing.

         3.9 Liens.  The Company has no Liens upon any of its  properties  other
than the Liens  which are listed on  Schedule  3.9 hereto and Liens on  personal
property  created in connection  with  equipment  leases,  installment  purchase
contracts, conditional sales contracts, purchase money mortgages and the like to
secure  Indebtedness  incurred to acquire property not exceeding $500,000 in the
aggregate.

         3.10 Indebtedness to and from Officers, Directors and Others. Except as
set forth on Schedule  3.10 hereto,  the Company is not indebted to any Founder,
director,  officer,  partner, manager, employee or consultant of the Company, or
to any  Affiliate  of the  Company,  except for amounts due as normal  salaries,
wages or  reimbursement  of  ordinary  business  expenses  or  routine  employee
advances for  expenses,  which  business  expenses and employee  advances do not
exceed  $100,000 in the aggregate for all such  Founders,  directors,  officers,
partners,  managers, employees and consultants and not exceeding $15,000 for any
such  Person.  Except as set  forth on  Schedule  3.10,  no  Founder,  director,
officer,  partner,  manager,  employee  or  consultant  of the  Company  nor any
Affiliate  of the Company,  is now, or on the Closing Date will be,  indebted to
the Company except for ordinary business expense advances.

         3.11  Insurance.  A  certificate  of insurance  listing all policies of
title,  liability,  fire,  worker's  compensation  and other forms of  insurance
(including bonds) insuring the properties, assets and operations of the business
of the  Company  has been  provided  to the  Purchaser.  Except  as set forth on
Schedule 3.11 hereto, all such policies are in full force and effect,  have been
underwritten  by  unaffiliated  insurers and are  sufficient  for all applicable
requirements  of law. All such policies  shall continue in full force and effect
after the Closing Date with respect to occurrences which would have been covered
by such policies  prior to the Closing Date,  except to the extent the Company's
Board of Directors determines that such policies or coverages should be changed.

         3.12 Tax  Returns.  The  Company  has filed all Tax returns and reports
which  are  required  to be filed  with  any  foreign,  federal,  state or local
governmental  authority  or agency and has paid all Taxes which have become due,
and made  adequate  provision for the payment of all Taxes that will become due,
under  applicable  foreign,   federal,   state  or  local  governmental  law  or
regulations  with  respect to the  periods in respect of which such  returns and
reports were filed, and all assessments of Taxes. The Company and its management
knows of no additional  assessments  since the date of such returns and reports,
and  there  will  be no  additional  assessments  for  which  adequate  reserves
appearing on the Balance  Sheet have not been  established.  Each of the Company
and its  Subsidiaries,  if any,  has made  adequate  provisions  for all current
Taxes.

         3.13     [This section is intentionally left blank].



                                                      -10-

<PAGE>




         3.14 Title to Assets.  The Company owns all of its  respective  assets,
and has good and marketable title with respect thereto, reflected in the Balance
Sheet of the Company and its Subsidiaries, as at the Balance Sheet Date, subject
to changes in the  ordinary  course of business  since the  Balance  Sheet Date,
subject to no Liens other than those granted to First Union Bank of Virginia.

         3.15     Material Contracts and Obligations.

                  (a) Attached  hereto as Schedule 3.15 is a true,  complete and
accurate list,  categorized by subject matter, of all of the following  material
outstanding  contracts,  plans,  leases,  and commitments  and other  agreements
(collectively  "Contracts")  entered into by the Company which are in writing or
have been orally agreed to by the Company:

                           (i)  all  Contracts  for  the  purchase  or  sale  of
         services,  materials,  products or  supplies  which  involve  aggregate
         payments  by the  Company of more than  $750,000  or involve  aggregate
         payments to the Company of more than  $750,000,  or which were  entered
         into other than in the ordinary course of business of the Company;

                           (ii) all  Contracts  or  arrangements  providing  for
         stock  options  or stock  purchases,  bonuses,  pensions,  deferred  or
         incentive    compensation,    retirement    or   severance    payments,
         profit-sharing,  insurance or other  benefit  plans or programs for the
         Founder  or  any  officer,  consultant,  director  or  employee  of the
         Company;

                           (iii)  all  Contracts  for  construction  or for  the
         purchase of real estate, improvements,  fixtures, equipment,  machinery
         and other items which under GAAP constitute  capital  expenditures  and
         which  individually  or in the aggregate for any related group of items
         involve expenditures of the Company in excess of $500,000;

                           (iv) all  Contracts  relating to the rental or use of
         equipment,  vehicles,  other personal property or fixtures,  except for
         Contracts individually involving payment of annual rentals or sums less
         than $15,000 and in the aggregate for the Company less than $500,000;

                           (v) all  Contracts  relating  in any way to direct or
         indirect  indebtedness  for  borrowed  money  or  evidenced  by a bond,
         debenture,  note or other evidence of indebtedness  (whether secured or
         unsecured)  of or  to  the  Company,  including  but  not  limited  to,
         indebtedness  by way of  lease  or  installment  purchase  arrangement,
         guarantee,  reimbursement  obligations pertaining to letters of credit,
         purchase price discount obligations,  undertakings on which others rely
         in  extending  credit,  or  otherwise,  and  all  mortgages,   pledges,
         conditional sales contracts,  chattel and purchase-money  mortgages and
         other   security   arrangements   with  respect  to  any  real  estate,
         improvements,  equipment,  other personal property or fixtures, used or
         owned by the Company,  except in each case for  contracts  individually
         involving less than $100,000;




                                                      -11-

<PAGE>



                           (vi)  all  Contracts  substantially  restricting  the
         Company  from  engaging in any line of business or  competing  with any
         Person or in any  geographical  area, or from using or  disclosing  any
         information in its possession (other than routine supplier and customer
         confidentiality agreements);

                           (vii) all license  agreements  with  annual  costs in
         excess of $250,000, either as licensor or licensee, other than licenses
         for software;

                           (viii)   all joint venture Contracts and other 
         Contracts involving a sharing of profits, revenue or cash flow;

                           (ix)     all Contracts with any Affiliate of the 
         Company (other than the Related Agreements) and all Contracts not made 
         in the ordinary course of its business;

                           (x) all other  Contracts,  except those which are (A)
         cancelable  on 30 days' or less  notice  without  any  penalty or other
         financial  obligation  or  (B) if not  so  cancelable,  involve  annual
         aggregate payments by or to the Company of $10,000 or less; or

                           (xi) all written  Contracts  of  employment  with any
         officer,  consultant,  director or employee and any such oral Contracts
         which are not terminable at will by the Company.

                  (b) Except as set forth on Schedule 3.15 hereto, all Contracts
required to be  disclosed  to the  Purchaser  pursuant to this  Section 3.15 are
valid,  binding and in full force and effect as to the Company,  and neither the
Company nor, to the best of the Sellers's knowledge, any other party thereto, is
in material breach or violation of, or material  default under, nor is there any
reasonable  basis for a claim of such breach or violation by the Company or such
default by the Company under,  the terms of any such Contract,  and no event has
occurred which constitutes or, with the lapse of time or the giving of notice or
both,  would  constitute,  such a material  breach,  violation or default by the
Company.

                  (c)      Set forth on Schedule 3.15(c) is a list of all 
Contracts having a funded remaining balance of $750,000 or more.

         3.16     Real Property-Owned. The Company does not own any real 
property.

         3.17 Real and Personal  Property - Leased.  To the best of the Sellers'
knowledge,  set forth in Schedule 3.17 hereto is a true and accurate description
of all real and material personal property leased by the Company,  setting forth
(i) the name of the lessor and (ii) a description of the property  leased.  With
respect to such leases,  the property described in such leases is presently used
by the Company as indicated  in Schedule  3.17 as lessee under the terms of such
leases, and such leases are in full force and effect, and will be free and clear
of all Liens created by the Company except as set forth in Schedule 3.17 hereto,
and  neither  the  Company  is in  default of the terms of any such lease in any
material respect nor, to the best of the Sellers'



                                                      -12-

<PAGE>



knowledge, is any lessor in default in any material respect under any such lease
nor have any events  occurred  which,  with the giving of notice or the lapse of
time,  or both,  would be a default  under any such lease.  The Company has made
available  the  Purchaser  a true and  correct  copy of all  leases set forth on
Schedule 3.17.

         3.18 Proprietary Rights. To the best of the Sellers' knowledge,  except
as  set  forth  on  Schedule  3.18,  the  Company  owns  all  material  patents,
trademarks,   trade  names,   service  marks,   logos,   copyrights,   including
applications  therefor,  inventions,  formulas,  methods and processes (all such
items being hereinafter referred to as "Intangible  Property") presently used by
the Company without any infringement upon the proprietary  rights of others; all
material  patents,   patent  applications,   registered  trademarks,   trademark
applications, trade names, service marks, logos, licenses and copyrights used or
owned by the Company in connection with its respective  businesses are set forth
on Schedule 3.18 hereto and have been duly registered in, filed in, or issued by
the United States  Patent  Office,  United States  Register of Copyrights or the
corresponding offices of other jurisdictions,  to the extent necessary to effect
lawful  ownership  of  such  intellectual  property  rights  in the  name of the
Company,  and have been properly  maintained  or renewed in accordance  with all
applicable provisions of applicable law; and Schedule 3.18 accurately sets forth
with respect to each patent, patent application, registered trademark, trademark
application, trade name, service mark, logo, license and copyright owned or used
by the Company in the conduct of its businesses,  (i) the date of expiration, if
any, (ii) whether such ownership  rights are exclusive and (iii) any licensee of
such  rights.  No  royalties or fees are payable by the Company to any Person by
reason of the ownership or use of any of the Intangible  Property.  All items of
Intangible  Property are valid and in good  standing,  and they are adequate and
sufficient to permit the Company to conduct its business as presently conducted,
and no other  rights of any kind with  respect to the  Intangible  Property  are
required by the Company for its operations as presently conducted. Except as set
forth on Schedule 3.18, the Company has the sole and exclusive  right to use the
Intangible  Property  and  the  Company  has  not  entered  into  any  licenses,
sublicenses  or  agreements  relating  to the  use by any  other  Person  of any
Intangible  Property  now in effect,  and to the best of Seller's  knowledge  no
infringement exists upon the Intangible Property by any other Person.  Except as
disclosed on Schedule 3.18 hereto,  no charge or claim is pending or threatened,
nor has any charge or claim been made  against the Company  within the past five
years to the effect that the sale of any of its respective  products or services
infringes upon or conflicts in any way with any rights or properties of the type
enumerated above owned or held by any other Person.

         3.19  Necessary  Property;  Condition of  Property.  To the best of the
Sellers'  knowledge,  the properties and assets owned,  leased by or licensed to
the Company, and reflected in the Balance Sheet,  constitute all of the real and
personal  properties,  tangible and  intangible,  which are  necessary,  used or
useful in the conduct of its business in the manner and to the extent  presently
conducted or as presently  contemplated to be conducted.  No other material real
or personal  properties  are  required  for the  conduct of the  business of the
Company as presently conducted.

         3.20     Necessary Licenses.  To the best of the Sellers' knowledge,
except as set forth on Schedule 3.20, the Company has all licenses, permits, 
consents, concessions and other



                                                      -13-

<PAGE>



authorizations  of  governmental,   regulatory  or  administrative  agencies  or
authorities,   whether   foreign,   federal,   state,  or  local   (collectively
"Licenses"),  required to own and lease its properties and assets and to conduct
its business as now  conducted  except  where the failure to have such  Licenses
would not have a Material  Adverse Effect.  Except as specified in Schedule 3.20
hereto,  (or as expressly  exempted by Schedule 3.6) no registrations,  filings,
applications,  notices, transfers,  consents, approvals, audits, qualifications,
waivers or other action of any kind is required by virtue of the  execution  and
delivery  of  this  Agreement,  or  of  the  consummation  of  the  transactions
contemplated  hereby  (a) to avoid the loss of any such  License,  or any asset,
property or right pursuant to the terms  thereof,  or the violation or breach of
any law  applicable  thereto or (b) to enable the  Company to hold and enjoy the
same after the Closing Date in the conduct of its business as conducted prior to
the Closing Date.

         3.21     Compliance with Law.

                  (a) To the best of the  Sellers'  knowledge,  except as may be
set forth on Schedule 3.21(a) hereto,  the Company is not in default under or in
violation  of any law  (including,  without  limitation,  laws  relating  to the
issuance  or sale of  securities,  antitrust,  zoning  and  building  codes  and
ordinances,   occupational   safety,   the   protection   of  the   environment,
transportation,  storage or disposal of hazardous waste,  anti-pollution and air
and water quality laws), or any licenses, franchises, permits, authorizations or
concessions granted by, or any judgment,  decree, writ,  injunction or order of,
any governmental or regulatory  authority,  applicable to its business or any of
its properties or assets,  except where such defaults and violations  would not,
in the aggregate,  have a Material Adverse Effect.  The Company has not received
any notification alleging any violations of any of the foregoing within the last
five years with respect to which adequate corrective action has not been taken.

                  (b) To the best of Sellers'  knowledge,  no event has occurred
which (i) could result in the Company being found  unqualified to hold, or which
permits,  or after notice or lapse of time or both would permit,  the revocation
or termination  of any of the Licenses or the denial of an  application  for the
renewal  thereof or (ii)  would  result in any  impairment  of the rights of the
Company as holder of any such License.

                  (c) To the  best of the  Seller's  knowledge,  no  present  or
former stockholder,  officer, director, employee or agent of the Company, has in
order to assist  the  Company  in  obtaining  or  retaining  any  License or any
business  for or with,  or  directing  business  to the Company  offered,  paid,
promised  to pay or  authorized  the payment of any money,  or  offered,  given,
promised  to give,  or  authorized  the giving of  anything  of value to (i) any
officer or employee of any government or any department, agency, instrumentality
thereof,  or any person  acting in an official  capacity for or on behalf of any
such  government or department,  agency or  instrumentality  (such an officer or
employee being referred to as a "foreign official"),  (ii) any foreign political
party or official  thereof or any candidate  for foreign  political  office,  or
(iii) any person,  while knowing that all or a portion of such money or thing of
value will be  offered,  given,  or  promised,  directly or  indirectly,  to any
foreign official,  to any foreign political party or official thereof, or to any
candidate  for  foreign  political  office,  in each case,  for  purposes of the
following:



                                                      -14-

<PAGE>




                           (A)  illegally  or corruptly  influencing  any act or
         decision  of any such  foreign  official,  political  party or official
         thereof,  or  candidate in such  person's  official  capacity,  or (ii)
         inducing such foreign official, political party or official thereof, or
         candidate  to do or omit to do any act in  violation of the lawful duty
         of such person, or

                           (B)  illegally  or  corruptly  inducing  such foreign
         official, political party or official thereof, or candidate to use such
         person's influence with a foreign government or instrumentality thereof
         to  affect or  influence  any act or  decision  of such  government  or
         instrumentality.

                  There is not now, nor has there ever been,  any  employment of
or beneficial ownership of the Company by any governmental or political official
in any country in the world.

         3.22     Environmental Compliance.

                  (a) To the best of the Sellers' knowledge, (i) the Company has
not generated, used, transported,  treated, stored, released or disposed of, and
has not suffered or permitted anyone else to generate,  use,  transport,  treat,
store, release or dispose of any "Hazardous  Substance" (as hereinafter defined)
in violation of any "Environmental  Laws" (as hereinafter  defined);  (ii) there
has not been any generation, use, transportation, treatment, storage, release or
disposal of any Hazardous Substance resulting from the conduct of the Company or
the  use of any  property  or  facility  by the  Company  or to the  best of the
Sellers's knowledge, any nearby or adjacent properties or facilities,  which has
created or might  reasonably  be expected to create any liability on the part of
the Company under the Environmental  Laws or which would require reporting to or
notification by the Company to any governmental  entity; (iii) no asbestos which
is or has some  reasonable  likelihood  of becoming  friable or  polychlorinated
biphenyl or underground  storage tank is contained in or located at any facility
owned,  leased or used by the Company;  and (iv) any Hazardous Substance handled
or dealt with in any way in connection with the business of the Company, whether
before or during the  ownership of the Company has been and is being  handled or
dealt with in all respects in compliance with the  Environmental  Laws in effect
at the time such activities were being conducted.

                  (b)  For  purposes  of this  Agreement,  the  term  "Hazardous
Substance"  shall mean (but shall not be limited to) substances that are defined
or listed in, or otherwise classified pursuant to, any applicable  Environmental
Laws as "hazardous  substances,"  "hazardous  materials"  "hazardous  wastes" or
"toxic  substances,"  or any  other  formulation  intended  to  define,  list or
classify  substances by reason of deleterious  properties such as  ignitability,
corrosivity, reactivity, radioactivity,  carcinogenicity,  reproductive toxicity
or "EP toxicity," and petroleum and drilling  fluids,  produced waters and other
wastes associated with the exploration, development, or production of crude oil,
natural gas or geothermal energy.

                  (c) For purposes of this  Agreement,  the term  "Environmental
Laws" shall mean the  Comprehensive  Environmental  Response,  Compensation  and
Liability Act of 1980, as amended,  the Resources  Conservation and Recovery Act
of  1976,  as  amended,  and  any  applicable  statutes,   regulations,   rules,
ordinances, codes, licenses, permits, orders, approvals,



                                                      -15-

<PAGE>



plans,  authorizations,  concessions,  and  similar  items  of all  governmental
authorities and all applicable judicial,  administrative and regulatory decrees,
judgments and orders,  any of which relate to the  protection of human health or
the environment  from the effects of Hazardous  Substances,  including,  but not
limited to, those pertaining to reporting, licensing, permitting,  investigating
and  remediating  emissions,  discharges,  releases  or  threatened  releases of
Hazardous  Substances  into the air,  surface  water,  groundwater  or land,  or
relating to the manufacture,  processing, distribution, use, treatment, storage,
disposal, transport or handling of Hazardous Substances.

         3.23 Litigation.  To the best of the Sellers' knowledge,  except as set
forth on Schedule 3.23 hereto,  there is no suit, claim,  action,  proceeding or
investigation pending or threatened against the Company or any of its respective
assets or properties,  including each Employee  Benefit Plan at law or in equity
or before any governmental authority or instrumentality or before any arbitrator
of any kind,  against the Founder,  or any  management  director,  officer,  key
employee or the holder of more than five  percent  (5%) of the Capital  Stock of
the Company,  nor has there occurred any event or does there exist any condition
on the basis of which any litigation, proceeding or investigation might properly
be instituted and there is no reasonable basis for any such suit, claim, action,
proceeding  or  investigation.  Except as set  forth on  Schedule  3.23  hereto,
neither the Company  nor to the best  knowledge  of the  Sellers,  any  Founder,
management  director,  officer,  key  employee  or the  holder of more than five
percent (5%) of the Capital Stock of the Company,  nor, to the best knowledge of
the Sellers, any Employee Benefit Plan has been a party to any such suit, claim,
action,  proceeding  or  investigation  during the past two years  involving its
business, assets or properties, nor has any such suit, claim, action, proceeding
or investigation been threatened by or against the Company.

         3.24 No Material Adverse Changes.  Except as set forth on Schedule 3.24
hereto,  since the Balance  Sheet Date,  there has occurred no material  adverse
change  in  the  business,   assets,   properties   (tangible  and  intangible),
operations,  condition  (financial or otherwise) or  liabilities of the Company,
whether or not in the ordinary course of business,  whether separately or in the
aggregate with other occurrences or developments, and whether insured against or
not (a  "Material  Adverse  Effect"),  and the Sellers  have no knowledge of any
occurrence or  development  which might  reasonably be expected to result in any
such Material Adverse Effect.

         3.25 Employee Benefit Plans.  Except as described on Schedule 3.25, the
Company does not maintain or operate any Employee  Benefit Plan nor has any such
Plan been maintained or operated  during the past three years.  The Company does
not maintain or contribute to any Guaranteed Pension Plan or Multiemployer Plan.
With  respect to each  Employee  Benefit  Plan listed on Schedule  3.25,  to the
extent applicable:

                  (a) Each such Employee  Benefit Plan has been  maintained  and
operated  in all  material  respects in  compliance  with its terms and with all
applicable  provisions of the ERISA,  the Code and all  applicable  regulations,
rulings and other authority issued thereunder;

                  (b) All contributions  required by law to have been made under
each such  Employee  Benefit Plan (without  regard to any waivers  granted under
Section 412 of the Code)



                                                      -16-

<PAGE>



to any fund or trust established thereunder or in connection therewith have 
been made by the due date thereof;

                  (c) Each such Employee  Benefit Plan intended to qualify under
Section 401(a) of the Code is the subject of a favorable unrevoked determination
letter issued by the Internal  Revenue Service as to its qualified  status under
the Code,  which  determination  letter may still be relied  upon as to such tax
qualified status, and no circumstances have occurred that would adversely affect
qualified status of any such Employee Benefit Plan;

                  (d)      No Benefit Plan is subject to Title IV of ERISA;

                  (e) None of such  Employee  Benefit  Plans that are  "employee
welfare  benefit  plans"  as  defined  in  Section  3(1) of ERISA  provides  for
continuing  benefits  or  coverage  for  any  participant  or  beneficiary  of a
participant  after  such  participant's  termination  of  employment,  except as
required by applicable law,  including  section 4980B of the Code or Section 601
of ERISA; and

                  (f) Neither the Company nor any trade or business  (whether or
not  incorporated)  under common  control with the Company within the meaning of
Section 4001 of ERISA has, or at any time has had, any  obligation to contribute
to any "multiemployer plan" as defined in Section 3(37) of ERISA.

         3.26 Withholdings; Contracts; Labor Relations. The Company has withheld
all amounts  required by law or  agreement  to be withheld by it from the wages,
salaries and other  payments to its  employees and is not liable for any arrears
of wages  or any  taxes or  penalties  for  failure  to  comply  with any of the
foregoing.  Except as set forth on Schedule  3.26  hereto,  the Company is not a
party to any written employment agreement, arrangement or understanding with any
of its officers,  employees,  partners or shareholders.  There are no collective
bargaining  agreements covering any of the employees of the Company. The Company
has not breached or otherwise  failed to comply in any material respect with any
provision of any collective  bargaining  agreement or other labor union contract
applicable  to any of its  employees.  No consent  of any union (or any  similar
group or  organization)  is required in connection with the  consummation of the
transactions   contemplated  hereby.   There  are  no  pending,   threatened  or
anticipated  (a)  employment  discrimination  charges or  complaints  against or
involving the Company  before any federal,  state,  or local board,  department,
commission or agency, (b) unfair labor practice charges or complaints,  disputes
or  grievances  affecting  the  Company,  (c)  union  representation   petitions
respecting the employees of the Company,  (d) efforts being made to organize any
of the employees of the Company or (e) strikes,  slow downs, work stoppages,  or
lockouts or threats thereof affecting the Company.

         3.27 Governmental Regulations.  The Company is not a "holding company",
or a "subsidiary company" of a "holding company" or an "affiliate" of a "holding
company", as such terms are defined in the Public Utility Holding Company Act of
1935, as amended; nor is the Company an "investment  company", or an "affiliated
person" or a "principal  underwriter" of an "investment  company", as such terms
are defined in the Investment Company Act of 1940,



                                                      -17-

<PAGE>



as amended.  The Company is not now, nor has it been within the past five years,
a "United States real property holding corporation" as defined in Section 897 of
the Code.

         3.28  Corporate  Documents,  Books and  Records.  Complete  and correct
copies of the  Articles of  Incorporation  and  by-laws,  and of all  amendments
thereto,  of the Company have been  previously  made available to the Purchaser,
and no changes in said  documents  will be made on or before  the  Closing  Date
other than as disclosed to, and concurred to in writing by, the  Purchaser.  The
minute  books of the  Company  contain  accurate  records  of all  meetings  and
consents in lieu of meetings of the Board (and its committees) and  shareholders
of the Company  since  incorporation.  Except as reflected in such minute books,
there are no minutes of  meetings  or  consents in lieu of meetings of the Board
(or its committees) or of the shareholders of the Company. The books and records
of the Company  accurately  reflect the  transactions  to which the Company is a
party or by which  its  properties  are  subject  or bound,  and such  books and
records have been properly kept and maintained in all material respects.

         3.29     Broker Costs.  None of the Sellers are obligated for any 
Broker Costs relating to the transactions contemplated by this Agreement.

         3.30 Disclosure. No representation,  warranty or statement made in this
Agreement,  any Related Agreement, or any agreement,  certificate,  statement or
document  furnished  by or on  behalf  of the  Sellers  in  connection  with the
purchase of the Purchased Securities or the grant of the Option contains or will
contain any untrue  statement of material fact or omits to state a material fact
necessary in order to make the statements  contained herein or therein, in light
of the circumstances in which they were made, not misleading.

         3.31     Certain Agreements of Officers and Employees.

                  (a) No officer or key  employee  of the  Company is, or is now
expected to be, in  violation  of any term of any  employment  contract,  patent
disclosure  agreement,   proprietary   information   agreement,   noncompetition
agreement,  nonsolicitation  agreement,  or any other  contract or  agreement or
restrictive covenant relating to the right of any such officer or employee to be
an  employee,  to be  employed by the  Company,  or because of the nature of the
business conducted or proposed to be conducted by the Company or relating to the
use of trade secrets or proprietary  information of others,  and to the Sellers'
best knowledge and belief,  the continued  employment of the Company's  officers
and  employees  does not subject the Company or the  Purchaser to any  liability
with respect to any of the foregoing matters.

                  (b)  Except  as set  forth on  Schedule  3.31(b),  to the best
knowledge of the Sellers, no officer of the Company, nor any key employee of the
Company whose termination, either individually or in the aggregate, would have a
Material Adverse Effect on the Company, has any present intention of terminating
his or her employment with the Company.

                  (c)      For purposes of this Agreement, "key employee" means 
any of the Persons described in Schedule 3.31(c).




                                                      -18-

<PAGE>



         3.32  Registration  Rights.  Except  for  the  rights  granted  to  the
Purchaser pursuant to the Registration Rights Agreement, no Person has demand or
other  registration  rights  to  cause  the  Company  to file  any  registration
statement  under the Securities Act relating to the securities of the Company or
any right to participate in any such registration statement.

                                   ARTICLE IV

                           PURCHASER'S REPRESENTATIONS

         4.1 Investment  Intent. The Purchaser hereby represents and warrants to
the Sellers that it is (i) an  "accredited  investor" as defined in Regulation D
of the Securities Act and (ii) it is acquiring the Purchased  Securities and the
Option for investment and not with a view to the distribution thereof.

         4.2 Authorization.  The Purchaser hereby represents that this Agreement
and the Related  Agreements  to which it is a party have been executed by a duly
authorized  Person on its behalf,  and the execution,  delivery and  performance
hereof and thereof have been duly authorized by all appropriate action.

         4.3 Enforceability.  The Purchaser hereby represents that the execution
and  delivery  by the  Purchaser  of this  Agreement  and  each  of the  Related
Agreements  will  result  in  legally  binding   obligations  of  the  Purchaser
enforceable  against it in accordance  with the respective  terms and provisions
hereof and thereof.

         4.4 Exemption.  The Purchaser understands that the Purchased Securities
and Option are not (and any Common  Stock  acquired on exercise of the Option at
the time of issuance will not be)  registered  under the  Securities  Act on the
grounds  that  the sale  provided  for in this  Agreement  and the  issuance  of
securities  hereunder  is exempt  from  registration  under the  Securities  Act
pursuant  to Section  4(1)  thereof,  and that the  Company's  reliance  on such
exemption is predicated on the Purchaser's representations set forth herein.

         4.5  Restrictions  on  Resale.  The  Purchaser   understands  that  the
Purchased Securities and the Option Securities may not be sold, transferred,  or
otherwise  disposed  of  without  registration  under the  Securities  Act or an
exemption  therefrom,  and  that in the  absence  of an  effective  registration
statement  covering such Securities or an available  exemption from registration
under the Securities  Act, the Purchased  Securities  and the Option  Securities
must be held indefinitely.  The Purchaser agrees that in no event will it make a
transfer  or  disposition  of any  of the  Purchased  Securities  or the  Option
Securities (other than pursuant to an effective registration statement under the
Securities  Act),  unless and until (i) the  Purchaser  shall have  notified the
Sellers of the proposed  disposition and (ii) if requested by the Sellers,  such
Purchaser shall have furnished to the Sellers at the expense of the Purchaser or
its transferee,  an opinion of counsel reasonably satisfactory to the Sellers to
the  effect  that  such  transfer  may be made  without  registration  under the
Securities Act.




                                                      -19-

<PAGE>



         4.6      Broker Costs.  The Purchaser is not obligated for any Broker
Costs related to the transaction contemplated by this Agreement.

                                    ARTICLE V

                CONDITIONS TO PURCHASER'S OBLIGATION TO PURCHASE

         The  Purchaser's   obligation  to  purchase  the  Purchased  Securities
pursuant  to Section  2.1 of this  Agreement  is subject  to  compliance  by the
Sellers with the agreements and  representations  herein  contained,  and to the
satisfaction, on or prior to the Closing Date, of the following conditions:

         5.1 Related Agreements.  Each of the Related Agreements shall have been
executed and delivered in the form provided for herein,  and each of the Related
Agreements shall,  subject only to the satisfaction of the conditions  contained
in the Escrow  Agreement,  be in full force and effect and no term or  condition
thereof  shall  have been  amended,  modified  or waived  except  with the prior
written  consent of the  Purchaser.  All  covenants,  agreements  and conditions
contained in the Related  Agreements  which are to be performed or complied with
on or prior to the Closing Date shall have been  performed  or complied  with in
all  material  respects,  subject  to the  conditions  contained  in the  Escrow
Agreement.

         5.2 Charter Documents; Good Standing Certificates.  The Purchaser shall
have  received  from the Sellers (a) a copy,  certified by the  Secretary of the
Company to be true and complete as of the Closing Date, of the by-laws  thereof;
and (b) a  certificate,  dated not more than five days prior to the date hereof,
of the relevant  governmental  authority or other  appropriate  official of each
state in which the Company is  qualified  to do  business,  as to the  Company's
corporate good standing in such state or  qualification  to do business,  as the
case may be.

         5.3 Proof of Corporate  Action.  The Purchaser shall have received from
the Company copies certified by the Secretary thereof to be true and complete as
of the Closing Date,  of the records of all corporate  action taken to authorize
the execution,  delivery and  performance  of each of the Related  Agreements to
which the Company is a party.

         5.4 Incumbency Certificate.  The Purchaser shall have received from the
Company an  incumbency  certificate,  dated the Closing  Date,  signed by a duly
authorized  officer thereof and giving the name and bearing a specimen signature
of each individual who shall be authorized to sign, in the name and on behalf of
the  Company,  each of the Related  Agreements  to which the Company is or is to
become a party,  and to give  notices and to take other  action on behalf of the
Company under each of such documents.

         5.5 Legal  Opinions.  The Purchaser  shall have received (a) from Egger
Betts  Austin  Ahrens  Treacy,  counsel  to the  Sellers,  a  favorable  opinion
substantially  in the form of Exhibit E hereto,  and (b) from  Moffatt,  Thomas,
Barrett, Rock & Fields,  counsel to the Company, a favorable opinion in the form
of Exhibit F hereto.



                                                      -20-

<PAGE>




         5.6 Legality;  Governmental and Other  Authorizations.  The purchase of
the  Purchased  Securities,  the  Option,  and  the  Option  Securities  by  the
Purchaser,  and the other  transactions  contemplated  herein and in the Related
Agreements,  shall have been approved by the Securities and Exchange  Commission
as provided in Section 2.3. None of the transactions  contemplated herein and in
the Related  Agreements shall be prohibited by any law or governmental  order or
regulation, nor shall they subject the Purchaser to any penalty, special tax, or
other onerous  condition.  All other necessary  consents,  approvals,  licenses,
permits,  orders  and  authorizations  of, or  registrations,  declarations  and
filings with, any governmental or administrative  agency or of or with any other
Person,  with respect to any of the transactions  contemplated by this Agreement
or any of the  Related  Agreements,  shall have been duly  obtained  or made and
shall be in full force.

         5.7 Due  Diligence.  The  Purchaser  shall  have  completed  its legal,
accounting  and  business  due  diligence  review of the Company and the results
thereof shall have been satisfactory to the Purchaser.  Not in limitation of the
foregoing, the Purchaser shall have completed review and been satisfied with all
of the terms,  conditions and documentation relating to the capital structure of
the  Company,   including   such   amendments  to  the  Company's   Articles  of
Incorporation,  by-laws and other documents as shall be necessary to reflect the
terms of the  Purchaser's  proposed  investment.  Such review shall be completed
within two days after Purchaser's receipt of the Financial Statements.

         5.8 General. All instruments and legal,  governmental,  administrative,
corporate  and  partnership  proceedings  in  connection  with the  transactions
contemplated by this Agreement and the Related  Agreements shall be satisfactory
in form and substance to the  Purchaser,  and the Purchaser  shall have received
copies of all documents,  including, without limitation, records of corporate or
other  proceedings,  the opinion of counsel  contemplated in Section 5.5 hereof,
and any consents, licenses, approvals, permits and orders required to be secured
by the Sellers in connection with the transactions  contemplated herein or which
the Purchaser may have requested in connection therewith.

                                   ARTICLE VI

                     CONDITIONS TO THE SELLERS' OBLIGATIONS

         The  Sellers'  obligation  to  sell  the  Purchased  Securities  to the
Purchaser  pursuant to this  Agreement is subject to compliance by the Purchaser
with the agreements herein contained, and to the satisfaction on or prior to the
Closing Date, of the following conditions:

         6.1  Representations.  The  representations  made by the  Purchaser  in
Article IV hereof shall be true and correct in all material  respects  when made
and shall be true and correct in all material respects as of the Closing Date.

       6.2 Related  Agreements.  Each of the Related  Agreements to which the
Purchaser is a party shall have been executed by the  Purchaser.  All covenants,
agreements and conditions  contained in the Related  Agreements  which are to be
performed or complied with by the


                                                      -21-

<PAGE>



Purchaser on or prior to the Closing Date shall have been  performed or complied
with by the Purchaser in all material respects.

                                   ARTICLE VII
                                     OPTION
         7.1 Grant of Option.  Subject to and  conditioned  upon  receipt by the
Purchaser of SEC approval  thereof under the Public Utility  Holding Company Act
of 1935, the Purchaser  shall have the right,  upon the terms and subject to the
conditions  set  forth in this  Article  VII,  at any time on or after  the date
hereof and at or prior to 11:59 pm.,  Mountain  time,  on September 2, 1998 (the
"Expiration Time"), but not thereafter,  to acquire from Sellers (in the amounts
set forth in Schedule 7.1) all, but not less than all, of 206,000 fully paid and
nonassessable shares of Class B Stock (the "Option  Securities"),  at a purchase
price per share (the  "Option  Price") of $9.00 (the  "Option").  Such number of
shares,  type of security and Option Price are subject to adjustment as provided
herein,  and all  references to "Option  Securities"  and "Option  Price" herein
shall be deemed to include any such adjustment.

         7.2 Exercise of Option.  The purchase rights represented by this Option
are  exercisable  by the Purchaser at any time and from time to time at or prior
to the  Expiration  Time by  delivering  notice of  exercise  in  writing to the
Sellers.  The closing for the sale of the Option Securities shall occur at 10:00
a.m.  Mountain  time at the  offices of the  Company on the fifth day  following
delivery of the notice to Sellers. At such closing,  the Purchaser shall deliver
the Option  Price for the Option  Securities  thereby  purchased  (by cash or by
check or bank draft  payable to the order of  Sellers),  and the  Sellers  shall
deliver certificates evidencing the Option Securities,  properly endorsed in the
name of Purchaser or its assignee.  If Sellers do not own a sufficient number of
shares  of Class B Stock at the  time of  receipt  of such  notice,  they  shall
promptly  exercise their right under the Articles of  Incorporation to convert a
sufficient  number of shares of Class A Stock to Class B Stock to allow  them to
perform their obligations hereunder.

         7.3 Transfer of Shares.  Certificates  for shares  purchased  hereunder
shall be delivered to the Purchaser  properly  endorsed to  Purchaser,  within a
reasonable time after the date on which this Option shall have been exercised in
accordance with the terms hereof.  The Sellers hereby represent and warrant that
all shares of Option  Securities  which may be transferred  upon the exercise of
this Option will, upon such exercise, be duly and validly authorized and issued,
fully  paid and  nonassessable  and free from all  taxes,  liens and  charges in
respect of the issuance thereof.

         7.4 No Rights as  Shareholders.  This Option does not entitle the 
Purchaser to any voting,  dividend,  distribution  or other rights as a 
shareholder of the Company with respect to the Option Securities prior to the 
exercise hereof.

         7.5  Transfer or  Assignment.  Without  the consent of Sellers,  
the rights under this  Option may be  transferred  to any direct or  indirect  
wholly-owned subsidiary of Purchaser's



                                                      -22-

<PAGE>



parent corporation,  Central and South West Corporation,  by providing notice of
transfer to Sellers.

         7.6 Adjustment for Stock Splits,  Stock  Dividends,  Recapitalizations,
Automatic  Conversion,  etc.  The  Option  Price  and  the  number  and  type of
securities  and/or other property to which the Purchaser  would be entitled upon
exercise of this Option shall be appropriately and  proportionately  adjusted to
reflect   any   stock   dividend,    stock   split,   combination   of   shares,
reclassification,  recapitalization,  automatic conversion,  redemption or other
similar event affecting the number or character of outstanding  shares of Common
Stock so that the number and type of securities  and/or other  property to which
the holder would be entitled upon exercise of this Option shall be equal to that
to which such holder would have been  entitled at the time of such event if such
holder had exercised this Option immediately prior thereto.

         7.7 Adjustment for Reorganization,  Consolidation, Merger, etc. In case
of  any  consolidation  or  merger  of  the  Company  with  or  into  any  other
corporation,  entity or person, or any other corporate reorganization,  in which
the  Company  shall  not  be  the   continuing  or  surviving   entity  of  such
consolidation,  merger or reorganization,  or any transaction in which in excess
of 50% of the  company's  voting  power  is  transferred,  or any sale of all or
substantially  all of the  assets of the  Company  (any such  transaction  being
hereinafter referred to as a  "Reorganization"),  then, in each case, the holder
of this  Option,  on  exercise  or  conversion  hereof  at any  time  after  the
consummation or effective date of such Reorganization, shall receive, in lieu of
the Option  Securities  transferrable on such exercise prior to the date of such
Reorganization,  the stock and other securities and property (including cash) to
which such holder would have been entitled upon the date of such  Reorganization
if such holder had exercised this Option immediately prior thereto.

         7.8  Cooperation.  The Sellers will not take any action,  or vote their
shares of Common  Stock to cause any  amendment  of the  Company's  Articles  of
Incorporation  or  by-laws or to effect  any  reorganization,  recapitalization,
transfer  of  assets,  consolidation,  merger,  dissolution,  issue  or  sale of
securities or any other action,  if the effect of the action would avoid or seek
to avoid the  observance  or  performance  of any of the terms to be observed or
performed  hereunder by the Sellers,  but will at all times in good faith assist
in the  carrying out of all the  provisions  of this Option and in the taking of
all such  action as may be  necessary  or  appropriate  in order to protect  the
rights of the holder of the Option against impairment;  provided, nothing herein
is intended to conflict with Dr. L.J.  Ybarrondo's  fiduciary  responsibility to
the Company in his capacity as an officer and/or director of the Company,  which
at all times shall take priority over the terms of this Section 7.8.




                                                      -23-

<PAGE>



                                  ARTICLE VIII

                                    INDEMNITY

         8.1      Indemnification.

               (a) Notwithstanding any disclosures made in the Schedules hereto,
Dr. L. J. Ybarrondo,  Dr. Marilda  Ybarrondo,  the Ybarrondo Family Trust B, the
Ybarrondo  Family Trust C-1, and the Ybarrondo  Family Trust C-2  (collectively,
the  "Indemnitors")  jointly and severally hereby agree to indemnify,  exonerate
and hold the Purchaser and its shareholders,  officers, directors, employees and
agents (each,  an  "Indemnitee")  free and harmless from and against any and all
actions,  causes of action,  suits, losses,  liabilities,  damages and expenses,
including,  without  limitation,  reasonable  attorneys' fees and  disbursements
(collectively,  "Damages"),  arising out of or resulting from any failure by the
Sellers to comply  with any of their  covenants  or any breach by the Sellers of
any of their  representations  and  warranties in this  Agreement,  or any other
agreement  contemplated hereby, except where such Damages are caused directly by
the  actions  of the  Indemnitee  in  violation  of its  obligations  under such
agreements.

                  (b) Subject to Section  8.1(c) the aggregate  liability of the
Indemnitors for claims made under Section 8.1(a) shall not exceed $1,750,000. In
addition to the  foregoing,  the  Indemnitors  shall not be liable for any claim
made under Section 8.1(a) unless such claim exceeds $75,000;  provided, when the
cumulative  claims under Section 8.1(a) exceed $250,000 the Indemnitors shall be
liable for all such claims up to the $1,750,000 general limitation.

                  (c) The  parties  acknowledge  that  Purchaser  has a right of
indemnification against the Company under Section 6.1 of the Registration Rights
Agreement that is similar to Purchaser's  right of  indemnification  against the
Indemnitors  under  Article VIII of this  Agreement.  Purchaser  agrees that its
aggregate recovery of Damages under said Section 6.1 of the Registration  Rights
Agreement  and  Article  VIII of this  Agreement  shall not  exceed  $3,500,000;
provided,  however,  the parties  further agree that nothing herein shall affect
Purchaser's   unconditional   right  to  pursue   indemnification   against  the
Indemnitors  (jointly and severally)  under Article VIII of this Agreement,  the
Company under the Registration Rights Agreement,  or any combination thereof, at
Purchaser's sole discretion.

         8.2 Survival of Obligations.  The obligations of the Sellers under this
Article VIII shall survive the transfer of the Purchased Securities, the Option,
or the Option Securities, and the termination of this Agreement; provided, in no
event may  Purchaser  initiate an action for  indemnification  under Section 8.1
after the fifth anniversary of the date of the Agreement.




                                                      -24-

<PAGE>



                                   ARTICLE IX

                                     GENERAL

         9.1      Notices

                  (a)  All  demands,  notices,  requests,   consents  and  other
communications required or permitted under this Agreement, any Related Agreement
or the Purchased  Securities,  the Option or the Option  Securities  shall be in
writing and shall be personally  delivered or sent by facsimile  machine (with a
confirmation copy sent by one of the other methods  authorized in this Section),
commercial (including Fed Ex) or U.S. Postal Service overnight delivery service,
or deposited  with the U.S.  Postal  Service  mailed first class,  registered or
certified mail, postage prepaid, as set forth below:

         If to the Purchaser:

                  Public Service Company of Oklahoma
                  c/o CSW Business Ventures
                  Two West Second Street
                  Tulsa, Oklahoma  74103
                  Attention: David Thomison
                  Telephone: (918) 594-2278
                  Facsimile: (918) 594-3841

         with a copy to:

                  Doerner, Saunders, Daniel & Anderson
                  320 South Boston, Suite 500
                  Tulsa, OK 74103
                  Attention:  H. Wayne Cooper
                  Telephone: (918) 582-1211
                  Facsimile: (918) 591-5360

         If to Sellers:

                  Dr. L. J. Ybarrondo
                  c/o SCIENTECH, Inc.
                  1690 International Way
                  Idaho Falls, Idaho 83404



                                                      -25-

<PAGE>




         with a copy to:

                  Egger Betts Austin Ahrens Treacy
                  2300 City Center Bellevue
                  500 108th Avenue N.E.
                  Bellevue, Washington  98004
                  Attention:  Ed Ahrens
                  Tel:     (206) 450-3300
                  Fax:     (206) 450-3310

                           and

                  Moffatt, Thomas, Barrett, Rock & Fields
                  101 South Capitol Boulevard
                  Boise, Idaho  83701
                  Attention:  Paul Street
                  Tel:     208-345-2000
                  Fax:     208-385-5384

                  (b) Notices shall be deemed given upon the earlier to occur of
(i)  receipt  by the party to whom  such  notice  is  directed;  (ii) if sent by
facsimile machine, on the day (other than a Saturday, Sunday or legal holiday in
the  jurisdiction  to which such notice is directed) such notice is sent if sent
(as evidenced by the facsimile  confirmed  receipt) prior to 4:00 p.m.  Mountain
Time and,  if sent  after 4:00 p.m.  Mountain  Time,  on the day  (other  than a
Saturday,  Sunday or legal holiday in the  jurisdiction  to which such notice is
directed)  after  which such  notice is sent;  (iii) on the first  business  day
(other than a Saturday,  Sunday or legal  holiday in the  jurisdiction  to which
such  notice  is  directed)  following  the day the same is  deposited  with the
commercial carrier if sent by commercial overnight delivery service; or (iv) the
fifth day (other than a Saturday, Sunday or legal holiday in the jurisdiction to
which such notice is directed)  following  deposit thereof with the U..S. Postal
Service as aforesaid.  Each party, by notice duly given in accordance  therewith
may specify a different address for the giving of any notice hereunder.

         9.2 Survival and Termination of Covenants, Agreements,  Representations
and Warranties. All covenants,  agreements,  representations and warranties made
herein or in any other  document  referred to herein or  delivered  to any party
pursuant  hereto  shall be  deemed to have  been  relied on by each such  party,
notwithstanding  any  investigation  made by such  party or on its  behalf.  All
representations  and warranties made herein or in any of the Related  Agreements
shall survive the  execution and delivery of this  Agreement and of the transfer
of the Purchased Securities, the Option, or Option Securities.

         9.3  Amendments  and Waivers.  Except as otherwise  expressly  provided
herein, any term of this Agreement may be amended and the observance of any term
of this  Agreement may be waived (either  generally or in a particular  instance
and either  retroactively or prospectively) only with the written consent of the
Sellers and the Purchaser. Any amendment or waiver



                                                      -26-

<PAGE>



effected in  accordance  with this Section 9.3 shall be binding upon the Sellers
and the holder of any Purchased Securities sold pursuant to this Agreement.

         9.4 Entire Agreement.  This Agreement and the other agreements referred
to  herein  constitute  the whole  and  entire  agreement  between  the  parties
pertaining to the subject matter hereof,  and supersede all prior  agreements or
understandings  between the parties with respect thereto. This Agreement may not
be modified except by an instrument in writing signed by all parties.

         9.5 Governing Law. The validity,  construction  and enforcement of, and
the remedies under, this Agreement shall be governed in accordance with the laws
of Idaho, except any choice of law provision of Idaho law shall not apply if the
law of a state or jurisdiction other than Idaho would apply thereby.

         9.6  Jurisdiction  and Venue.  The parties to this Agreement agree that
jurisdiction  and venue of any action  brought to  enforce,  or to  construe  or
determine  the validity of, any term or  provision  contained in this  agreement
shall properly lie in the District  Court of Bonneville  County,  Idaho,  or the
United States District Court for the District of Idaho, or the District Court of
Tulsa County,  Oklahoma,  or the United States  District  Court for the Northern
District  of  Oklahoma.  Such  jurisdiction  and  venue are  merely  permissive;
jurisdiction   and  venue  shall  also  continue  to  lie  in  any  court  where
jurisdiction and venue would otherwise be proper. The parties further agree that
the mailing by certified mail, return receipt requested,  or the delivery by any
recognized expedited delivery service, of any process required by any such court
shall,  when received,  constitute  valid and lawful service of process  against
them, without the necessity for service by any other means otherwise provided by
statute or rule of court.

         9.7 Successors and Assigns.  The terms and conditions of this Agreement
shall inure to the benefit of and be binding  upon the parties  hereto and their
respective personal representatives,  successors and permitted assigns. No party
may assign its,  his or her  obligations  hereunder  without  the prior  written
consent of all other parties;  provided,  notwithstanding  any provision of this
Agreement or any Related  Agreement to the contrary,  without prior notice to or
consent of the Sellers,  Purchaser may assign all of its rights and  obligations
under this Agreement,  or any or all of its Purchased  Securities,  Option,  and
Option  Securities  purchased  hereunder,  to any Affiliate  under the direct or
indirect  control of  Purchaser's  parent  corporation,  Central  and South West
Corporation.

         9.8 Headings.  The headings  contained in this  Agreement are for
reference  purposes only and shall not affect the meaning or  interpretation of
this Agreement.

         9.9  Attorneys'  Fees.  If any  action is  brought  to  enforce,  or to
construe or determine the validity of, any term or provision of this  Agreement,
the prevailing party shall be entitled to reasonable attorneys' fees, costs, and
disbursements  in  addition  to any  other  relief  to which  such  party may be
entitled.




                                                      -27-

<PAGE>



         9.10  Severability.  If any  provision of this  Agreement is held to be
unenforceable  under  applicable law, such provision shall be excluded from this
Agreement  and the balance of this  Agreement  shall be  interpreted  as if such
provision  were so excluded  and shall be  enforceable  in  accordance  with its
terms.

         9.11  Pronouns  and  Plurals.  Whenever  the context may  require,  any
pronoun  used in this  Agreement  shall  include  the  corresponding  masculine,
feminine or neuter  forms,  and the singular  form of nouns,  pronouns and verbs
shall include the plural and vice versa.

         9.12 Further Action.  The parties to this Agreement shall execute
and deliver all  documents,  provide all  information  and take or refrain  from
taking action as may be necessary or appropriate to achieve the purposes of this
Agreement.

         9.13  Waiver.  No  failure  by any  party to  insist  upon  the  strict
performance of any covenant,  duty,  agreement or condition of this Agreement or
to  exercise  any  right  or  remedy  consequent  upon a  breach  thereof  shall
constitute waiver of any such breach or any other covenant,  duty,  agreement or
condition.

         9.14 Counterparts. This Agreement may be executed in counterparts, each
of which shall be deemed an original,  but all of which shall constitute one and
the same instrument.  Any signature delivered by facsimile transmission shall be
deemed a valid and binding signature for all purposes hereof.

         9.15 Construction.  All parties hereto having participated  actively in
the  negotiation  and  drafting of this  Agreement,  and each party  having been
represented  by  counsel,  the terms of this  Agreement  shall not be  construed
against,  nor more favorably to, any party,  regardless of their  responsibility
for its preparation.

         9.16  Expenses.  The Sellers on the one hand,  and the Purchaser on the
other hand,  agree to pay their  separate  costs and  expenses  (such as travel,
photocopy and telephone expenses and including the fees and expenses of counsel)
in connection with the  documentation of the  transactions  contemplated by this
Agreement and the purchase of the Purchased Securities,  and shall not be liable
for the other's expenses; provided, if the transactions contemplated hereby fail
to  close  for  any  reason  other  than  breach  by  Sellers  of any  of  their
representations, warranties or covenants herein, the Purchaser shall pay Sellers
$50,000,  as full  compensation  for and liquidated  damages in respect of their
expenses in connection with the transactions contemplated hereby.




                                                      -28-

<PAGE>




         IN WITNESS  WHEREOF,  the Sellers and the Purchaser  have executed this
Agreement as of the day and year first above written.

                                           "Sellers"




                                           DR. L. J. YBARRONDO

                                           YBARRONDO FAMILY TRUST B


                                       By:
                                           Dr. L. J. Ybarrondo, Trustee



                                           YBARRONDO FAMILY TRUST C-1


                                       By:
                                           Dr. L. J. Ybarrondo, Trustee




                                           YBARRONDO FAMILY TRUST C-2


                                       By:
                                           Dr. L. J. Ybarrondo, Trustee



                                           DR. MARILDA YBARRONDO



                                           DR. ANA-BELEN YBARRONDO





                                                      -29-

<PAGE>




                                            MICHEL W. YBARRONDO



                                            LOREN A. YBARRONDO


                                            "Purchaser"

                                      PUBLIC SERVICE COMPANY OF OKLAHOMA

                                       By:

                                      Name:

                                     Title:




                                                      -30-



                                                              Exhibit 6
                              AMENDED AND RESTATED

                            ARTICLES OF INCORPORATION
                                       of
                                 SCIENTECH, Inc.


         KNOW ALL MEN BY THESE PRESENTS:

         That  we,  the  undersigned  officers  of  SCIENTECH,  Inc.,  an  Idaho
Corporation,  (the "Corporation") do hereby certify,  pursuant to the provisions
of Sections  30-1-61 and 30-1-62 of the Idaho Business  Corporation Act, that by
the consent of the shareholders and directors of said Corporation, dated the 2nd
day of June, 1997, the following  Amended and Restated Articles of Incorporation
were adopted,  which amend and supersede the prior Articles of Incorporation and
all amendments  thereto in their entirety;  and the Chief Executive  Officer and
Secretary of the Corporation were duly authorized and directed to sign,  verify,
file and do all  things  required  by law to carry  into  effect  the  following
Amended and Restated Articles of Incorporation:

                                       I.

         The name of the Corporation is SCIENTECH, Inc.

                                       II.

         The Corporation shall exist in perpetuity.

                                      III.

         The purposes for which the Corporation is organized are the transaction
of any or all lawful business for which  corporations may be incorporated  under
the Idaho Business Corporation Act.

                                       IV.

         The  aggregate  number of shares  which  this  Corporation  shall  have
authority  to issue  shall be  7,000,000,  consisting  of  6,000,000  shares  of
nonassessable  Class A Voting  Common  Stock have a par value of one cent ($.01)
per share (the "Class A Common Stock"),  and 1,000,000  shares of  nonassessable
Class B Nonvoting  Common  Stock having a par value of one cent ($.01) per share
(the "Class B Common  Stock").  Each share of Class A Common Stock shall entitle
its holder to






<PAGE>



one (1) vote.  The holders of Class B Common Stock shall not be entitled to vote
on any matter  coming before the  shareholders  of the  Corporation  for a vote,
except that no amendment to the  Corporation's  Articles of Incorporation may be
effected  without  the  affirmative  vote  of  holders  of  a  majority  of  the
outstanding  shares of Class B Common Stock, and except as otherwise provided by
law.  Each holder of Class A Common  Stock shall have the right at any time,  at
the option of such  holder,  to  exchange  each  share of Class A Common  Stock,
without the payment of any  further  consideration,  into one (1) share of fully
paid Class B Common Stock, and vice versa.

         Except as provided herein with respect to voting rights,  each share of
Class A  Common  Stock  and  Class B  Common  Stock  (collectively,  hereinafter
referred to as "Common Stock") issued and outstanding  shall be identical in all
respects, and no dividends shall be paid on any share of the Common Stock unless
the same dividend is paid on all shares of the Common Stock  outstanding  at the
time of such payment.

                                       V.

         The business of this  Corporation  shall be managed and  conducted by a
Board of  Directors,  consisting  of such  number  as may be  designated  by the
Bylaws. A majority of the directors must be present at a meeting to constitute a
quorum for the  transaction of any business,  and the act of the majority of the
directors  present at a meeting at which a quorum is present shall be the act of
the Board of Directors.

                                       VI.

         The  Corporation  shall,  to the fullest  extent  permitted  by Section
30-1-5 of the Idaho Business Corporation Act and to the fullest extent permitted
by Sections  30-1-851  through 859 of the Idaho Business  Corporation  Act which
becomes  effective  July  1,  1997,  or the  indemnification  provisions  of any
successor statute, indemnify every director, officer, employee or agent and such
person's heirs, executors,  administrators, and personal representatives against
all judgments,  penalties,  fines,  settlements and reasonable expenses actually
incurred by the person in connection with any  threatened,  pending or completed
action  suit  or  proceeding,  whether  civil,  criminal,   administrative,   or
investigative.  The foregoing right of indemnification shall not be exclusive of
any other rights of indemnity to which any such person may be entitled under any
bylaw, agreement, vote of shareholders or disinterested directors or otherwise.

                                      VII.

         A director  shall not be personally  liable to the  Corporation  or its
shareholders  for monetary  damages for any action taken, or any failure to take
any action, as a director, except for:

                 the amount of financial  benefit  received by a director to 
which he/she is not entitled;





<PAGE>




                  an intentional infliction of harm on the Corporation or the 
shareholders;

                  a violation of Section 30-1-833 of the Idaho Business 
Corporation Act; or

                  an intentional violation of criminal law.

                                      VIII.

         Preemptive  rights  shall not exist with  respect to shares of stock or
securities convertible into shares of stock in the Company.

                                       IX.

         The right to cumulative  voting in the election of directors  shall not
exist with respect to shares of the stock of the Company.

                                       X.

         The Corporation hereby agrees to abide and be bound by the terms of the
Idaho Business Corporation Act, which becomes effective July 1, 1997.


         The foregoing Amended and Restated Articles of Incorporation  amend the
original Articles of Incorporation and all amendments thereto by:

                  Amending  Article  IV to  provide  for two  classes  of Common
         Stock,  consisting  of  Class  A  Voting  Common  Stock  and a  Class B
         Nonvoting  Common Stock,  and an additional  authorization of 1,000,000
         shares of  nonassessable  nonvoting  Common Stock, and to establish the
         voting rights and convertibility of the above shares;

                  Amending  Article V to  provide  that the  Board of  Directors
         shall  consist of such number of  directors  as may be specified in the
         Bylaws; and to remove the supermajority of Lawrence J. Ybarrondo.

                  Adding Articles VI and VII to provide for  indemnification  of
         directors,  officers,  and  certain  other  persons,  and to limit  the
         liability of directors, to the extent permitted by Idaho law;

                  Adding  Article  VIII  to  provide  that  there  shall  not be
         preemptive rights with respect to shares of the Corporation;

                  Adding Article IX to provide that there shall be no cumulative
         voting with respect to election of directors; and






<PAGE>




                  Adding  Article  X to agree to abide and be bound by the Idaho
         Business Corporation Act, which becomes effective July 1, 1997.


         Such  amendments  do  effect  a change  in the  stated  capital  of the
Corporation from 6,000,000 to 7,000,000 shares. The number of shares outstanding
at the time of such  amendment  was  _____________shares,  and ____ shares voted
against the amendments.


         DATED this ________ day of __________________, 1997.


                              
                                           SCIENTECH, Inc.

                              By:
                                           Chief Executive Officer

                              By:
                                           Secretary






<PAGE>



STATE OF IDAHO                      )
                                    ) ss.
County of Bonneville                )

                  DR. L.J. YBARRONDO, being first duly sworn, deposes and says:

                  That he is the Chief Executive  Officer of SCIENTECH,  Inc. an
Idaho  corporation,  and is one  of the  persons  who  executed  the  above  and
foregoing Amended and Restated Articles of Incorporation of SCIENTECH, Inc., and
that the facts set forth in said Amended and Restated  Articles of Incorporation
are true and correct.
                                            

                                         Chief Executive Officer

               SUBSCRIBED AND SWORN to before me this _____ day of __________,
1997.


                              NOTARY PUBLIC FOR IDAHO
                              Residing at
                              My Commission Expires





                                                       Exhibit 7

                                ESCROW AGREEMENT

         ESCROW AGREEMENT (the "Agreement") made and entered into as of this 2nd
day of June, 1997, by and among PUBLIC SERVICE COMPANY OF OKLAHOMA,  an Oklahoma
corporation (the "Purchaser");  DR. L. J. YBARRONDO,  and certain of his Related
Trusts  and  Family  Members  listed  on  Schedule  A hereto  (collectively  and
individually, "Sellers"); and FIRST UNION NATIONAL BANK OF VIRGINIA (the "Escrow
Agent"),  regarding the purchase and sale of certain  Common Stock of SCIENTECH,
Inc., an Idaho corporation ("the Company").

                              W I T N E S S E T H:
         In  consideration  of the mutual  promises,  covenants,  and conditions
hereinafter set forth, the parties agree as follows:

         1.       Recitals.

                  (a)  Purchaser  and Sellers have entered into a certain  Stock
Purchase  Agreement of even date (the "Purchase  Agreement"),  wherein Purchaser
has agreed to purchase  and  certain of the  Sellers  have agreed to sell 70,000
shares of Class A Voting  Common  Stock and 436,000  shares of Class B Nonvoting
Common Stock for a purchase price of $3,036,000  (the "Purchase  Price"),  which
shall be paid to Sellers in proportion to their ownership of Common Stock as set
forth in Schedule A.

                  (b)  The  purchase,  sale  and  transfer  under  the  Purchase
Agreement  is subject to and  contingent  upon  approval by the  Securities  and
Exchange  Commission  ("SEC") under the Public Utilities  Holding Company Act of
1935, as amended, as provided for in the Purchase Agreement.

                  (c) Under the terms of the Purchase  Agreement,  the purchase,
sale and transfer of the subject shares may not be completed  until the approval
described in Section 1(b) is obtained.

                  (d) The  parties  desire to escrow  all such  shares of Common
Stock and the Purchase Price with Escrow Agent pending such approval.

                  (e) The Escrow  Agent has agreed to hold such shares and funds
and dispense of the property pursuant to the terms and conditions stated herein.

         2.  Deposit of Purchase  Price.  Upon  execution  and  delivery of this
Agreement,  Purchaser  shall  forward to the Escrow Agent copies of the executed
Purchase  Agreement  and all  Related  Agreements  (as  defined in the  Purchase
Agreement), and a cashier's check or wire transfer in the amount of the Purchase
Price (i.e.,  $3,036,000).  The Escrow Agent will hold such funds received by it
in a special  account (the "Escrow  Fund")  entitled  "Scientech  1997  Purchase
Agreement," and will maintain records of the funds deposited pursuant hereto.



<PAGE>



         3. Deposit of Escrow  Shares.  Upon the  execution and delivery of this
Agreement,  Sellers shall deliver to the Escrow Agent certificates  representing
an aggregate of 506,000 shares of Common Stock of the Company (collectively, the
"Escrow Shares").  Such  certificates  shall be accompanied by stock assignments
separate from the certificates,  properly  endorsed in favor of Purchaser.  Upon
the  effectiveness of the amendment to the Company's  Articles of Incorporation,
as  contemplated  by the  Purchase  Agreement,  the Escrow  Shares  shall become
506,000 shares of Class A Voting Common Stock of the Company.  The Sellers shall
also  furnish a request to the Company to convert  436,000 of the Escrow  Shares
into a like number of shares of Class B Nonvoting  Common Stock  pursuant to the
terms of Section  7(a).  The Escrow Agent shall hold the Escrow Shares and stock
assignments pending receipt of instructions pursuant to Section 7.

         4. Deposit of  Additional  Shares.  In the event that the Company shall
issue,  whether  by way  of  stock  dividend,  stock  split  or  otherwise,  any
additional  common  or  preferred  stock or other  securities  as a result of or
attributable  to the registered  ownership of the Escrow Shares,  such common or
preferred stock or other securities shall constitute part of the "Escrow Shares"
under  this  Agreement  and,  if the same are  received  by  Sellers,  they will
immediately  upon receipt  thereof deposit and deliver the same to Escrow Agent,
together with stock assignments properly signed in favor of Purchaser.

         5.       Investment of Escrow Fund.

                  (a) The Escrow  Agent will  invest  the Escrow  Fund,  and any
interest or income earned from the Escrow Fund, in (i) direct obligations of the
United  States of  America,  and (ii)  obligations  for which the full faith and
credit of the United  States of America is pledged to provide for the payment of
principal and interest,  or a money market fund that invests exclusively in said
investments.  The Escrow Agent shall not invest any funds in  commercial  paper.
The maturity date of such  investment  shall not exceed 30 days from the date of
such investment or  reinvestment.  All interest or other income earned by virtue
of such investment shall be hereafter referred to as "Escrow Income."

                  (b) In the  event  that  the  Company  shall  issue  any  cash
dividends on the Escrow Shares during the term of this Agreement, such dividends
shall be  retained  by the Escrow  Agreement  as "Escrow  Dividends"  under this
Agreement and, if the same is received by Sellers,  they will  immediately  upon
receipt thereof deposit and deliver the same to Escrow Agent.

         6. Voting  Rights to Escrow  Shares.  Sellers  shall  retain all voting
rights  with  respect to the Escrow  Shares  during the term of this  Agreement.
Purchaser  shall have no rights  whatsoever  with  respect to the Escrow  Shares
except  such rights as may  attach,  pursuant to Section 7, upon  receipt by the
Purchaser  of SEC  approval of the  transactions  contemplated  by the  Purchase
Agreement, as provided in the Purchase Agreement.

          7.  Payment of Escrow Fund and Delivery of Escrow  Shares.  Subject to
the conditions set forth below, the Escrow Agent shall liquidate all investments
and pay and disburse the Escrow Fund and the Escrow Shares, as follows:


                                                        -2-

<PAGE>



                  (a) Upon receipt of notice by  Purchaser  that SEC approval of
the  transactions  contemplated  by the Purchase  Agreement has been obtained as
provided  in the  Purchase  Agreement,  the Escrow  Agent  shall  deliver to the
Company the  certificates  representing  the Escrow  Shares,  together  with the
Sellers'  signed stock  assignments and request for conversion of 436,000 shares
of Class A Voting  Common  Stock into a like number of Class B Nonvoting  Common
Stock, and upon the Escrow Agent's receipt of certificates  representing  70,000
shares of Class A Voting  Common  Stock,  436,000  shares  of Class B  Nonvoting
Common  stock,  and such  additional  shares  or  securities  that may have been
deposited  with the  Escrow  Agent  pursuant  to  Section 4, each in the name of
Purchaser (the "Purchased Securities"), Escrow Agent shall promptly deliver:

                           (i) to the Sellers, the Escrow Fund and all Escrow 
         Income; and

                           (ii)to the Purchaser, the certificates evidencing 
the Purchased Securities and all Escrow Dividends.

                  (b) Upon receipt of notice by Purchaser  that SEC approval has
been denied,  or in the event approval is neither  obtained nor denied within 75
days from the date  hereof (or such later date as may be agreed to in writing by
Purchaser and Dr. L.J.  Ybarrondo and communicated to Escrow Agent),  the Escrow
Agent shall promptly deliver:

                           (i) to the Purchaser, the Escrow Fund and all Escrow 
         Income; and

                           (ii) to the Sellers,  the  certificates  representing
         the Escrow Shares,  all accompanying stock assignments and requests for
         conversion, and all Escrow Dividends.

         8. Delivery Instructions.  All deliveries by the Escrow Agent hereunder
shall be made to the recipient's  address provided below unless the Escrow Agent
shall  receive  written  instructions  from the recipient at least five (5) days
prior to the date delivery is to be made.

         9. Allocation of Purchase Price and Escrow Income Among Sellers. In the
event of payment of the Escrow  Fund and the Escrow  Income  pursuant to Section
7(a),  the Sellers  shall be entitled to their pro rata share of the Escrow Fund
and the Escrow  Income  based upon their  respective  share  ownership of Escrow
Shares,  as set forth in Schedule A. No Seller shall  receive any Escrow  Income
until  each  Seller has  furnished  a duly  executed  IRS Form W-9 to the Escrow
Agent.

         10.  Limitation of Liability of the Escrow Agent.  The Escrow Agent, as
part of the consideration for acceptance of this escrow agreement,  shall not be
liable for any acts or omissions done in good faith or for any claims,  demands,
losses or damages  made or  suffered by any party to this  Agreement,  excepting
such as may be arrived at through or caused by its willful  misconduct  or gross
negligence.

          11.  Expenses of Escrow  Agent.  The Escrow Agent shall be entitled to
reimbursement of its normal out-of-pocket expenses including,  but not by way of
limitation,  the  fees  and  costs  of  attorneys  or  agents  which it may find
necessary to engage in  performance of its duties  hereunder,  all to be paid by
Purchaser; and the Escrow Agent shall have, and is hereby

                                                        -3-

<PAGE>



granted,  a prior lien upon any property,  cash or assets held  hereunder,  with
respect to its unpaid fees and nonreimbursed expenses, superior to the interests
of any other persons or entities.

         12.  Fee of  Escrow  Agent.  A fee of  $2,000.00  will  be  paid by the
Purchaser to the Escrow Agent as compensation for its services hereunder.  It is
further  agreed that a reasonable  additional  compensation  will be paid to the
Escrow Agent by Purchaser  for any unusual,  extraordinary  services that may be
required to render hereunder.

          13.  Protection of Escrow Agent.  In  consideration  of this escrow by
Escrow Agent, Escrow Agent, Purchaser and Sellers agree that:

                  (a)  Purchaser  and Sellers may examine the Escrow  Fund,  the
Escrow Shares, the Escrow Dividends, the Escrow Income, or the accounts or other
records of the Escrow Agent relating thereto,  at any time during business hours
at the office of Escrow Agent.

                  (b)  Escrow  Agent's  duties  and  responsibilities  shall  be
limited to those expressly set forth in this  Agreement,  and Escrow Agent shall
not be subject to, nor obliged to recognize,  any other  agreement  between,  or
direction  or  instruction  of, any or all of the  parties  hereto  even  though
reference thereto may be made herein;  provided,  however, this Agreement may be
amended at any time or times in accordance with the provisions below.

                  (c) No  assignment  of the interest of either of the Purchaser
or Sellers or their  successors  shall be binding  upon Escrow  Agent unless and
until written  evidence of such assignment in form  satisfactory to Escrow Agent
shall be filed with and accepted by Escrow Agent.

                  (d) In performing its duties hereunder,  Escrow Agent may rely
on  statements  furnished to it by  Purchaser,  the Company and Sellers,  or any
other evidence  deemed by Escrow Agent to be reliable,  and shall be entitled to
act on the advice of counsel.

                  (e)  If  any  property  held  by  Escrow  Agent  hereunder  is
attached,  garnished,  or  levied  upon  under the  order of any  court,  or the
delivery  thereof  shall be stayed or enjoined by the order of any court,  or if
any other  order,  judgment or decree  shall be made or entered by any court any
part of such property,  Escrow Agent is hereby expressly  authorized to obey and
comply with all writs,  orders or decrees so entered or issued,  whether with or
without  jurisdiction.  Escrow  Agent  shall not be liable to any of the parties
hereto or their  successors by reason of compliance with any such writ, order or
decree  notwithstanding such writ, order or decree being subsequently  reversed,
modified, annulled, set aside or vacated.

                  (f) Escrow  Agent may,  in its sole and  absolute  discretion,
deposit the Escrow Fund, the Escrow Shares,  the Escrow Dividends and the Escrow
Income  or so much  thereof  as  remains  in its  hands  with the then  chief or
presiding judge of the United States District Court whose jurisdiction  includes
either  Idaho Falls,  Idaho,  or Tulsa,  Oklahoma,  and  interplead  the parties
hereto,  and upon so  depositing  such  property  and  filing its  complaint  in
interpleader, it shall be relieved of all liability under the terms hereof as to
the property so deposited and shall be entitled to recover in such  interpleader
action,  from the other  parties  hereto,  its  reasonable  attorneys'  fees and
related costs and expenses incurred in commencing and prosecuting such

                                                        -4-

<PAGE>



action and  furthermore,  the parties hereto for themselves their successors and
assigns,  do hereby submit themselves to the jurisdiction of each said Court and
do hereby appoint the then Clerk,  or acting Clerk,  of each said Court as their
agent for the service of all process in connection with such proceedings.

                  (g)  Notwithstanding  anything herein to the contrary,  Escrow
Agent shall be under no duty to monitor or enforce  compliance  by  Purchaser or
Sellers  with any term or  provision  of the  Purchase  Agreement  or any  other
agreement  between the parties.  The parties agree to hold Escrow Agent harmless
for actions taken by it in reliance upon statements furnished to it by Purchaser
or Sellers.

         14. New Escrow Agent.  If Escrow Agent shall decline or cease to act as
escrow agent,  the parties shall have a period of 30 days to mutually agree upon
a successor  which successor shall be deemed to be Escrow Agent for all purposes
of this Escrow Agreement. If a successor Escrow Agent has not been appointed and
has not accepted such appointment by the end of the 30-day period,  Escrow Agent
may  apply  to a  court  of  competent  jurisdiction  for the  appointment  of a
successor Escrow Agent, and the costs,  expenses and reasonable  attorneys' fees
which Escrow Agent incurs in connection with such a proceeding shall be paid out
of the Escrow Funds.

         15.  Construction  of the Instruments by the Escrow Agent. In accepting
the funds deposited  pursuant  hereto,  it is agreed and understood  between the
parties  hereto that the Escrow  Agent will not be called  upon to construe  any
contract or instrument  in  connection  herewith and shall be required to act in
respect to deposits herein made only as directed herein.

         16.      Notices.

                  (a)  All  demands,  notices,  requests,   consents  and  other
communications  required or permitted  under this Agreement  shall be in writing
and  shall  be  personally  delivered  or  sent  by  facsimile  machine  (with a
confirmation copy sent by one of the other methods  authorized in this Section),
commercial  (including FedEx) or U.S. Postal Service overnight  delivery service
or deposited  with the U.S.  Postal  Service  mailed first class,  registered or
certified mail, postage prepaid, as set forth below:

                  If to the Purchaser:

                           Public Service Company of Oklahoma
                           c/o CSW Business Ventures
                           Two West Second Street
                           Tulsa, Oklahoma  74103
                           Attention: David Thomison
                           Telephone: (918) 594-2278
                           Facsimile: (918) 594-3841

                  with a copy to:


                                                        -5-

<PAGE>



                           Doerner, Saunders, Daniel & Anderson
                           320 South Boston, Suite 500
                           Tulsa, OK 74103
                           Attention:  H. Wayne Cooper
                           Telephone: (918) 582-1211
                           Facsimile: (918) 591-5360

                  If to Sellers, addressed to them at the addresses set forth on
Schedule A.

                  with a copy to:

                           Egger Betts Austin Ahrens Treacy
                           2300 City Center Bellevue
                           500 108th Avenue N.E.
                           Bellevue, Washington  98004
                           Attention:  Ed Ahrens
                           Tel:     (206) 450-3300
                           Fax:     (206) 450-3310

                           and

                           Moffatt, Thomas, Barrett, Rock & Fields
                           101 South Capitol Boulevard
                           Boise, Idaho  83701
                           Attention:  Paul Street
                           Tel:     208-345-2000
                           Fax:     208-385-5384

                  If to the Escrow Agent:

                           First Union National Bank of Virginia
                           Corporate Trust Administration,
                           901 East Cary Street, 2nd Floor
                           Richmond, Virginia  23219
                           Tel: 804-788-9660
                           Tel: 804-788-9661

                  (b) Notices shall be deemed given upon the earlier to occur of
(i)  receipt  by the party to whom  such  notice  is  directed;  (ii) if sent by
facsimile machine, on the day (other than a Saturday, Sunday or legal holiday in
the  jurisdiction  to which such notice is directed) such notice is sent if sent
(as evidenced by the facsimile  confirmed  receipt) prior to 4:00 p.m.  Mountain
Time and,  if sent  after 4:00 p.m.  Mountain  Time,  on the day  (other  than a
Saturday,  Sunday or legal holiday in the  jurisdiction  to which such notice is
directed)  after  which such  notice is sent;  (iii) on the first  business  day
(other than a Saturday,  Sunday or legal  holiday in the  jurisdiction  to which
such  notice  is  directed)  following  the day the same is  deposited  with the
commercial carrier if sent by commercial overnight delivery service; or (iv) the
fifth day (other than a Saturday, Sunday or legal holiday in the jurisdiction to
which such notice is

                                                        -6-

<PAGE>



directed)  following deposit thereof with the U..S. Postal Service as aforesaid.
Each party, by notice duly given in accordance therewith may specify a different
address for the giving of any notice hereunder.

          17. Governing Law. The internal law, and not the law of conflicts,  of
the State of Idaho  shall  govern all  questions  concerning  the  construction,
validity  and   interpretation  of  this  Agreement,   and  performance  of  the
obligations imposed by this Agreement.

         18.  Jurisdiction  and Venue.  The parties hereto agree that any action
brought by either party with respect to this  Agreement  shall be brought within
the jurisdiction and venue of the courts of the United States of America and the
State of Idaho, in Bonneville County, Idaho.

          19.   Counterparts.   This  Agreement  may  be  executed  in  separate
counterparts,  by original or  facsimile,  each of which will be an original and
all of which taken together will constitute one and the same agreement.

         20. Successors and Assigns; Binding Effect. This Agreement shall not be
assigned  any party  without  the prior  written  consent of all other  parties,
except that Purchaser may assign its rights to any entity wholly-owned  directly
or indirectly  by its parent  corporation,  Central and South West  Corporation.
This  Agreement  shall be binding upon, and inure to the benefit of, the parties
hereto and their  respective  heirs,  personal  representatives,  successors and
assigns.

         21.  Specific  Performance.  The  obligations  of  the  parties  hereto
(including the Escrow Agent) are unique in that time is of the essence,  and any
delay in performance  hereunder by any party will result in irreparable  harm to
the other party hereto. Accordingly,  either party may seek specific performance
and/or injunctive relief before any court of competent  jurisdiction in order to
enforce this Agreement or to prevent  violations of the provisions  hereof,  and
neither party shall object to specific  performance  or injunctive  relief as an
appropriate  remedy. The Escrow Agent  acknowledges its obligations,  as well as
the obligations of Purchaser and Sellers hereunder, are subject to the equitable
remedy of specific performance and/or injunctive relief.

         22.  Amendment,  Waiver,  etc.  This  Agreement  shall not be  amended,
modified, altered or revoked without the prior written consent of both Purchaser
and Sellers; provided that no amendment or modification will be made to Sections
10 through 16 hereof without the written consent of Escrow Agent.

          23.  Meaning of Terms.  Capitalized  terms used but not defined herein
shall have the meanings ascribed to such terms in the Purchase Agreement.

          24. Execution of Supplementary  Documents. The parties agree, upon the
request of any other party, to execute any agreements,  documents or instruments
consistent  with this Escrow  Agreement  which are necessary to  consummate  the
transactions contemplated in this Escrow Agreement.

          25.  Invalid  Provision.  The  invalidity or  unenforceability  of any
particular  provision  of this  Escrow  Agreement  shall  not  affect  the other
provisions of this Escrow Agreement, and
                                                        -7-

<PAGE>



this Escrow  Agreement  shall be construed  as if such invalid or  unenforceable
provision was omitted.

          26.  Entire  Agreement.  This Escrow  Agreement  and any  documents or
instruments  delivered  pursuant to this Escrow Agreement  constitute the entire
agreement  and  understanding  between  the  parties  and  supersede  any  prior
agreement  and  understanding  relating  to the  subject  matter of this  Escrow
Agreement.

         27.  Construction.  All parties hereto having participated  actively in
the  negotiation  and drafting of this Escrow  Agreement,  and each party having
been  represented by counsel,  the terms of this Escrow  Agreement  shall not be
construed  against,  nor more  favorably  to,  any  party,  regardless  of their
responsibility for its preparation.


                                                        -8-

<PAGE>




         IN WITNESS WHEREOF, the parties hereto have executed and delivered this
instrument as of the date first written above.

                                            "Purchaser"

                                            PUBLIC SERVICE COMPANY OF OKLAHOMA



                                            By:

                                            Name:

                                            Title:



                                            "Sellers"




                                            DR. L. J. YBARRONDO

                                            YBARRONDO FAMILY TRUST B


                                            By:
                                            Dr. L. J. Ybarrondo, Trustee

                                            YBARRONDO FAMILY TRUST C-1


                                            By:
                                            Dr. L. J. Ybarrondo, Trustee

                                            YBARRONDO FAMILY TRUST C-2


                                            By:
                                            Dr. L. J. Ybarrondo, Trustee



                                            DR. MARILDA  YBARRONDO


                                                        -9-

<PAGE>






                                            DR. ANA-BELEN YBARRONDO



                                            MICHEL W. YBARRONDO



                                            LOREN A. YBARRONDO


                                            "Escrow Agent"

                                           FIRST UNION NATIONAL BANK OF VIRGINIA


                                            By:

                                            Name:

                                            Title:


                                                       -10-

<PAGE>


                                   SCHEDULE A

                                 List of Sellers
 
                      Number of      Number of               Aggregate 
                      Escrow      Purchased Securities     Purchase Price
Name and Address      Shares        To Be Purchased     for Purchased Securities

Dr. L. J. Ybarrondo    300,000       70,000 Class A
                                    230,000 Class B
                                    300,000 Class A and B       $1,800,000

Ybarrondo Family 
Trust B

Ybarrondo Family 
Trust C-1

Ybarrondo Family

Trust C-2              206,000       206,000 Class B             1,236,000

Dr. Marilda Ybarrondo

Dr. Ana-Belen Ybarrondo

Michel W. Ybarrondo

Loren A. Ybarrondo


The address for notice purposes for each Seller is:

         Dr. L. J. Ybarrondo
         c/o SCIENTECH, Inc.
         1690 International Way
         Idaho Falls, Idaho 83404




                                                       -11-



                                                               Exhibit 8

                             SHAREHOLDERS' AGREEMENT

         THIS SHAREHOLDERS'  AGREEMENT  ("Agreement") is entered into as of June
2, 1997, by and among  SCIENTECH,  Inc., a corporation  formed under the laws of
Idaho  (the  "Company");  and the  Persons  named  in  Schedule  A  hereto  (the
"Shareholders").

                                    RECITALS

         WHEREAS, the Company has outstanding as of the date hereof 2,026,413 
shares of Common Stock; and

         WHEREAS,  each  Shareholder  has or is expected  to have a  substantial
investment in the Company by reason of its ownership of the capital stock of the
Company as set forth on Schedule A; and

         WHEREAS, the terms "Shareholder" or "Shareholders" as used herein shall
include the parties  hereto other than the Company and shall  include any future
holder of shares of Common Stock or other equity  securities  of the Company who
becomes a party to this Agreement; and

         WHEREAS,  the parties  believe  that it is in the best  interest of the
Company and the  Shareholders  to make  provision  for  matters  relating to the
governance of the Company;

         NOW,  THEREFORE,  in consideration of the mutual promises and covenants
hereinafter set forth, the parties hereto agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

         As used herein in this  Agreement,  the following  terms shall have the
following respective meanings:

         "Affiliate"  means,  as applied to the  Company or any other  specified
Person,  any Person directly or indirectly  controlling,  controlled by or under
direct or indirect common control with the Company (or other  specified  Person)
and shall also include (a) any Person who is a director or  beneficial  owner of
at least 5% of the then outstanding  equity  securities of the Company (or other
specified Person) and Family Members of any such Person, (b) any Person of which
the Company (or other  specified  Person) or an Affiliate  (as defined in clause
(a)  above) of the  Company  (or other  specified  Person)  shall,  directly  or
indirectly,  either beneficially own at least 10% of the then outstanding equity
securities or constitute at least a 10% equity participant,  and (c) in the case
of a specified Person who is an individual, any Family Member of such Person.

         "Approved  Management  Incentive Plan" shall mean any plan described on
Schedule 3.4(b) of the Stock Purchase Agreement, and any incentive stock plan or
other  form  of  incentive  compensation  approved  by the  Company's  Board  of
Directors and PSO in writing.



<PAGE>



         "Articles of Incorporation"  means the Amended and Restated Articles of
Incorporation  of the  Company  attached  as  Exhibit  A to the  Stock  Purchase
Agreement.

         "Common  Stock" means the Class A Voting Common  Stock,  par value $.01
per share,  and the Class B Nonvoting Common Stock, par value $.01 per share, of
the Company.

         "Escrow  Agreement" means that Escrow Agreement among Sellers,  PSO and
the Escrow  Agent named  therein in the form of Exhibit B to the Stock  Purchase
Agreement.

         "Fully  Diluted Basis" shall mean with respect to any shares of capital
stock of the Company the  aggregate of (a) all of such shares  which  consist of
Common  Stock,  and (b) with  respect to any other  shares  which are not Common
Stock,  the  number of shares  of  Common  Stock  into  which  such  shares  are
convertible at the time of  determination  of such Fully Diluted Basis,  and (c)
with  respect to any  options,  warrants  or other  rights to acquire  shares of
Common Stock (or securities  convertible  into or exchangeable for Common Stock)
the  maximum  number  of shares of  Common  Stock  issuable  at the time of such
determination  in connection with the exercise of any such options,  warrants or
other rights to subscribe, convert or exchange.

         "Options"  shall mean any  rights,  options,  or  warrants  to purchase
shares of Common Stock from the Company,  and securities of any type  whatsoever
that are, or may become, convertible into, exercisable,  exchangeable,  or carry
rights to subscribe for any Common Stock of the Company.

         "Person"   shall   mean  an   individual,   partnership,   corporation,
association,   trust,  joint  venture,   unincorporated   organization  and  any
government, governmental department or agency or political subdivision thereof.

         "PSO" shall mean Public Service Company of Oklahoma, an Oklahoma 
corporation.

         "Qualified IPO" shall mean a fully underwritten, firm commitment public
offering  pursuant to an effective  registration  statement under the Securities
Act  covering  the offer and sale by the  Company  of Common  Stock in which the
aggregate net proceeds to the Company after  deducting  underwriters'  discounts
and commissions  equals or exceeds  $20,000,000 and in which the price per share
of Common Stock offered to the public equals or exceeds $10.00, such price to be
equitably adjusted in the event of any stock dividend, stock split, combination,
recapitalization or other similar event, and the listing of such Common Stock on
a nationally recognized U.S. exchange.

         "Sellers"  shall mean the persons  listed on Schedule  2.1 of the Stock
Purchase Agreement.

         "Shareholders"  shall have the meaning  given such term in the Recitals
to this Agreement.

         "Stock Purchase  Agreement" means that certain  Agreement of even
date between Dr. L. J.  Ybarrondo and his Related  Trusts and Family Members (as
such terms are defined in the Stock Purchase  Agreement) and PSO, as well as the
Exhibits and Schedules thereto when the circumstances so admit.

                                                        -2-

<PAGE>




         "Transfer" shall mean, with respect to any security of the Company, any
transfer,  sale, gift,  exchange,  assignment,  pledge or other disposition by a
Shareholder  and in the  case of a  Shareholder  which is not an  individual,  a
Transfer of shares of Common Stock or other  security  held by such  Shareholder
shall be deemed to have been made if any equity interest in such  Shareholder is
directly or indirectly transferred, sold, given, exchanged, assigned, pledged or
disposed of to any other Person.

         "Transferee"  shall mean any Person who receives shares of Common Stock
by virtue of a Transfer.

                                   ARTICLE II

            AFFIRMATIVE COVENANTS OF THE COMPANY AND THE SHAREHOLDERS

         2.1      Board Representation and Voting Agreement.

                  (a) The  Shareholders  hereby agree to amend the Bylaws of the
Company,  and to take all other  actions as may be  necessary,  to establish and
maintain  the number of  directors of the Board of Directors of the Company at a
minimum of six (6).

                  (b)  For so long as PSO  owns  10% or more of the  outstanding
Common Stock of the Company on a Fully Diluted  Basis,  PSO shall have the right
to designate one (1) member of the Board of Directors.  The Shareholders  hereby
agree to cast their votes for, and the Company shall take all necessary steps to
nominate,  the  candidate  for the Board of  Directors  designated  by PSO,  who
initially shall be David M. Thomison.

                  (c) In the  event  all  parties  to this  Agreement  agree  to
increase  the number of  directors  above six,  the  parties  agree to fill such
vacancies only with independent industry executives.

                  (d) The Company  agrees  that,  without the consent of PSO, it
will not issue any Common Stock on a Fully  Diluted  Basis at a price lower than
$6.00 per share,  proportionately  adjusted to reflect any stock dividend, stock
split,  combination  of shares,  reclassification,  recapitalization,  automatic
conversion,  redemption or other similar event affecting the number or character
of outstanding shares of Common Stock, and the Shareholders hereby agree to vote
their shares,  and to take all other  actions as may be necessary,  to cause the
Company to comply with such covenant;  provided,  the provisions of this Section
2.1(d)  shall not apply to (i) Options  issued to any  employees  of the Company
pursuant to any Approved  Management  Incentive  Plan;  (ii) Common Stock issued
pursuant  to the  exercise  of Options  granted  under any  Approved  Management
Incentive  Plan;  and (iii) shares of Class A Voting  Common Stock issued to any
holder of shares of Class B Stock  upon the  conversion  of any share of Class B
Nonvoting Common Stock to Class A Voting Common Stock, and vice versa;

                  (e) If at any time  the  number  of  authorized  but  unissued
shares of Class A Voting  Common  Stock  shall not be  sufficient  to effect the
conversion of all then outstanding shares of the Class B Nonvoting Common Stock,
the Company and the Shareholders shall immediately take such corporate action as
may be necessary to increase its authorized but

                                                        -3-

<PAGE>



unissued shares of Class A Voting Common Stock to such number of shares as shall
be sufficient for such purpose.

                  (f)  Each  and  every   Transferee  of  the  shares  from  any
Shareholder  shall be bound by and  subject to all the terms and  conditions  of
this  Agreement.  So long as this  Agreement  is in effect,  the  Company  shall
require,  as a condition precedent to the Transfer of any shares covered by this
Agreement, that the Transferee agrees in writing to be bound by, and subject to,
the terms and conditions of this Agreement and to ensure that his Transferees of
the shares shall be likewise bound.

                  2.2 Restrictive Legend. The Company and the Shareholders agree
that, so long as this Agreement is in effect,  all share certificates in respect
of  Common  Stock or other  voting  securities,  now or  hereafter  held by each
Shareholder   will  be  stamped  or  otherwise   imprinted   with  a  legend  in
substantially the following form:

         THE SHARES  EVIDENCED BY THIS  CERTIFICATE  ARE SUBJECT TO  AGREEMENTS,
         COVENANTS AND  RESTRICTIONS  IN REGARD TO THE VOTING OF SUCH SHARES AND
         THEIR TRANSFER, AS PROVIDED IN THE ARTICLES OF INCORPORATION AND BY THE
         PROVISIONS OF A SHAREHOLDERS' AGREEMENT DATED JUNE 2, 1997 BY AND AMONG
         THE COMPANY AND THE SHAREHOLDERS  NAMED THEREIN,  A COPY OF WHICH IS ON
         FILE IN THE OFFICE OF THE SECRETARY OF THE COMPANY.

                  2.3 Director  Expenses.  The Company shall pay the  reasonable
out-of-pocket  travel,  lodging  and other  related  expenses  of all  directors
elected pursuant to the Articles of  Incorporation  and this Article II incurred
in connection with attendance at meetings of the Board or any committee thereof.

                                   ARTICLE III

                                  MISCELLANEOUS

         3.1      Notices.

                  (a)  All  demands,  notices,  requests,   consents  and  other
communications  required or permitted under this Agreement,  shall be in writing
and  shall  be  personally  delivered  or  sent  by  facsimile  machine  (with a
confirmation copy sent by one of the other methods  authorized in this Section),
commercial  (including FedEx) or U.S. Postal Service overnight delivery service,
or deposited  with the U.S.  Postal  Service  mailed first class,  registered or
certified mail, postage prepaid, as set forth on Schedule A hereto.

                  (b) Notices shall be deemed given upon the earlier to occur of
(i)  receipt  by the party to whom  such  notice  is  directed;  (ii) if sent by
facsimile machine, on the day (other than a Saturday, Sunday or legal holiday in
the  jurisdiction  to which such notice is directed) such notice is sent if sent
(as evidenced by the facsimile  confirmed  receipt) prior to 4:00 p.m.  Mountain
Time and,  if sent  after 4:00 p.m.  Mountain  Time,  on the day  (other  than a
Saturday,

                                                        -4-

<PAGE>



Sunday or legal  holiday in the  jurisdiction  to which such notice is directed)
after which such notice is sent;  (iii) on the first  business day (other than a
Saturday,  Sunday or legal holiday in the  jurisdiction  to which such notice is
directed) following the day the same is deposited with the commercial carrier if
sent by commercial overnight delivery service; or (iv) the fifth day (other than
a Saturday,  Sunday or legal holiday in the jurisdiction to which such notice is
directed)  following  deposit thereof with the U.S. Postal Service as aforesaid.
Each party, by notice duly given in accordance therewith may specify a different
address for the giving of any notice hereunder.

         3.2 Waivers and  Amendments.  The rights and obligations of the Company
and the rights and obligations of the Shareholders  under this Agreement may not
be waived (either generally or in a particular instance, either retroactively or
prospectively,  and either for a specified  period of time or  indefinitely)  or
amended without the written consent of all Shareholders.

         3.3 Entire Agreement.  This Agreement and the other agreements referred
to  herein  constitute  the whole  and  entire  agreement  between  the  parties
pertaining to the subject matter hereof,  and supersede all prior  agreements or
understandings  between the parties with respect thereto. This Agreement may not
be modified except by an instrument in writing signed by all parties.

         3.4 Governing Law. The validity,  construction  and enforcement of, and
the remedies under, this Agreement shall be governed in accordance with the laws
of Idaho, except any choice of law provision of Idaho law shall not apply if the
law of a state or jurisdiction other than Idaho would apply thereby.

         3.5  Jurisdiction  and Venue.  The parties to this Agreement agree that
jurisdiction  and venue of any action  brought to  enforce,  or to  construe  or
determine  the validity of, any term or  provision  contained in this  agreement
shall properly lie in the District  Court of Bonneville  County,  Idaho,  or the
United States District Court for the District of Idaho, or the District Court of
Tulsa County,  Oklahoma,  or the United States  District  Court for the Northern
District  of  Oklahoma.  Such  jurisdiction  and  venue are  merely  permissive;
jurisdiction   and  venue  shall  also  continue  to  lie  in  any  court  where
jurisdiction and venue would otherwise be proper. The parties further agree that
the mailing by certified mail, return receipt requested,  or the delivery by any
recognized expedited delivery service, of any process required by any such court
shall,  when received,  constitute  valid and lawful service of process  against
them, without the necessity for service by any other means otherwise provided by
statute or rule of court.

         3.6 Successors and Assigns.  The terms and conditions of this Agreement
shall inure to the benefit of and be binding  upon the parties  hereto and their
respective personal representatives,  successors and permitted assigns. No party
may assign its,  his or her  obligations  hereunder  without  the prior  written
consent of all other parties;  provided,  notwithstanding  any provision of this
Agreement or in the Bylaws of the Company to the contrary,  without prior notice
to or consent of the other parties to this Agreement,  PSO may assign all of its
rights  and  obligations  under this  Agreement,  or any or all of its shares of
Capital  Stock of the  Company,  to any  Affiliate  under the direct or indirect
control of PSO's parent  corporation,  Central and South West Corporation.  Each
Shareholder hereby agrees to vote its shares as necessary to

                                                        -5-

<PAGE>



effect any amendment to the Bylaws or take such other action as may be necessary
to permit PSO to effect such assignment.

         3.7      Headings.  The headings contained in this Agreement are for 
reference purposes only and shall not affect the meaning or interpretation of
this Agreement.

         3.8  Attorneys'  Fees.  If any  action is  brought  to  enforce,  or to
construe or determine the validity of, any term or provision of this  Agreement,
the prevailing party shall be entitled to reasonable attorneys' fees, costs, and
disbursements  in  addition  to any  other  relief  to which  such  party may be
entitled.

         3.9  Severability.  If any  provision of this  Agreement are held to be
unenforceable  under  applicable law, such provision shall be excluded from this
Agreement  and the  balance of the  Agreement  shall be  interpreted  as if such
provision  were so excluded  and shall be  enforceable  in  accordance  with its
terms.

         3.10  Pronouns  and  Plurals.  Whenever  the context may  require,  any
pronoun  used in this  Agreement  shall  include  the  corresponding  masculine,
feminine or neuter  forms,  and the singular  form of nouns,  pronouns and verbs
shall include the plural and vice versa.

         3.11     Further Action.  The parties to this Agreement shall execute 
and deliver all documents, provide all information and take or refrain from 
taking action as may be necessary or appropriate to achieve the purposes of 
this Agreement.

         3.12  Waiver.  No  failure  by any  party to  insist  upon  the  strict
performance of any covenant,  duty,  agreement or condition of this Agreement or
to  exercise  any  right  or  remedy  consequent  upon a  breach  thereof  shall
constitute waiver of any such breach or any other covenant,  duty,  agreement or
condition.

         3.13 Counterparts. This Agreement may be executed in counterparts, each
of which shall be deemed an original,  but all of which shall constitute one and
the same instrument.  Any signature delivered by facsimile transmission shall be
deemed a valid and binding signature for all purposes hereof.

         3.14 Expenses. The parties hereto agree to pay their separate costs and
expenses  (such as travel,  photocopy and  telephone  expenses and including the
fees and  expenses of  counsel)  in  connection  with the  documentation  of the
transactions  contemplated  by this  Agreement  and shall not be liable  for the
other's expenses.

         3.15     Termination.  This Agreement shall terminate upon the 
consummation of a Qualified IPO, or upon the unanimous consent of the parties.

         3.16 Equitable Remedies. The parties hereto agree that irreparable harm
would  occur  in the  event  that  any of the  agreements  and  provisions  this
Agreement were not performed  fully by the parties hereto in accordance with its
specific terms or conditions or were otherwise breached,  and that money damages
are an inadequate  remedy for breach of the Agreement  because of the difficulty
of ascertaining and quantifying the amount of damage that will be

                                                        -6-

<PAGE>



suffered by the parties hereto in the event that this Agreement is not performed
in  accordance  with its terms or  conditions  or is otherwise  breached.  It is
accordingly  hereby  agreed  that the  parties  hereto  shall be  entitled to an
injunction  or  injunctions  to  restrain,  enjoin and prevent  breaches of this
Agreement  by the other  parties  and to  enforce  specifically  such  terms and
provisions  of this  Agreement  in any court of the  United  States or any state
having  jurisdiction,  such remedy  being in addition to and not in lieu of, any
other rights and  remedies to which the other  parties are entitled to at law or
in equity.

         3.17  Escrow.  The  effectiveness  of this  Agreement is subject to and
contingent upon approval,  as provided therein, of the Stock Purchase Agreement,
and all  transactions  contemplated  thereby,  by the  Securities  and  Exchange
Commission  ("SEC") under the Public  Utility  Holding  Company Act, of 1935, as
amended.  Pending such  approval,  the parties  agree to execute,  deliver,  and
deposit  this  Agreement  with the Escrow  Agent (as such term is defined in the
Stock Purchase Agreement) pursuant to the terms of the Escrow Agreement.

                  (a) In the  event  the  SEC  disapproves  of the  transactions
contemplated by the Stock Purchase  Agreement,  or in the event no approval,  as
provided  therein,  or denial is  received  from the SEC within 75 days from the
date hereof (or such later date as may be agreed to in writing by PSO and Dr. L.
J. Ybarrondo and  communicated  to the Escrow Agent) (i) this Agreement shall be
rescinded,  and (ii) no party hereto shall have any liability to any other party
whatsoever.

                  (b) In  the  event  of SEC  approval  of  the  Stock  Purchase
Agreement, as provided therein, and all transactions  contemplated thereby, this
Agreement  shall be delivered  by the Escrow  Agreement to all parties and shall
continue in full force and effect.


                                                        -7-

<PAGE>




         In Witness  Whereof,  this  Agreement  has been executed as of the date
first above written.

                                            "Company"

                                            SCIENTECH, INC.


                                            By:

                                            Name:

                                            Title:



                                           "Shareholders"

                                            PUBLIC SERVICE COMPANY OF OKLAHOMA


                                            By:

                                            Name:

                                            Title:



                                            DR. L. J. YBARRONDO

                                            YBARRONDO FAMILY TRUST B


                                            By:
                                            Dr. L. J. Ybarrondo, Trustee

                                            YBARRONDO FAMILY TRUST C-1


                                            By:
                                            Dr. L. J. Ybarrondo, Trustee

                                                        -8-

<PAGE>




                                            YBARRONDO FAMILY TRUST C-2


                                            By:
                                            Dr. L. J. Ybarrondo, Trustee



                                            DR. MARILDA YBARRONDO



                                            DR. ANA-BELEN YBARRONDO



                                           MICHEL W. YBARRONDO



                                           LOREN A. YBARRONDO


                                           KR ACQUISITION CORP.


                                           By:
                                           Bruce R. Robinson, Chairman



                                           ROGER J. MATTSON

                                                        -9-

<PAGE>


                                   SCHEDULE A

                              List of Shareholders


   Name and Address                                          Number of Shares


PSO                                                           70,000 Class A
                                                             436,000 Class B

Dr. L. J. Ybarrondo                                          183,904 Class A

Ybarrondo Family Trust B                                      59,119 Class A

Ybarrondo Family Trust C-1                                    40,080 Class A

Ybarrondo Family Trust C-2                                   180,258 Class A

Dr. Marilda Ybarrondo                                         43,002 Class A

Dr. Ana-Belen Ybarrondo                                        1,990 Class A

Michel W. Ybarrondo                                            1,988 Class A

Loren A. Ybarrondo                                             1,988 Class A

KR Acquisition Corp.                                         298,500 Class A

Roger J. Mattson                                             118,189 Class A


                                                       -10-



                                                            Exhibit 9

                          REGISTRATION RIGHTS AGREEMENT

       THIS REGISTRATION RIGHTS AGREEMENT (the "Agreement") is made and entered
into as of June 2, 1997 among SCIENTECH, INC., an Idaho corporation (the 
"Company");PUBLIC SERVICE COMPANY OF OKLAHOMA, an Oklahoma corporation 
(hereinafter referred to as "PSO" or "Holder"); and DR. L. J. YBARRONDO; the 
YBARRONDO FAMILY TRUST C-2, Dr. L. J. Ybarrondo Trustee; KR ACQUISITION CORP., 
a Delaware corporation; and ROGER J. MATTSON (collectively with PSO, the 
"Holders").


                                    ARTICLE I

                                    RECITALS

         1.1 Dr. L. J.  Ybarrondo  and his  Related  Trusts  and  certain of his
Family Members own or control an aggregate of 1,018,329  shares of Common Stock,
par value $.01 per share, of the Company,  which ownership  constitutes over 50%
of the outstanding  voting stock of the Company.  Upon the  effectiveness of the
amendment to the Company's  Articles of Incorporation  contemplated by the Stock
Purchase Agreement, all such shares shall become shares of Class A Voting Common
Stock.

          1.2      Dr. L. J. Ybarrondo desires to reduce his ownership in the 
Company.

          1.3 The Company desires to accommodate and facilitate the sale of
a portion of Dr. L. J.  Ybarrondo's  stock in order to diversify its shareholder
base.

          1.4 PSO has reached an agreement  with Dr. L. J.  Ybarrondo to acquire
70,000  shares  of Class A Voting  Common  Stock and  436,000  shares of Class B
Nonvoting  Common Stock from Dr. L. J. Ybarrondo and the Ybarrondo  Family Trust
C-2 (the "C-2 Trust") for  consideration  that Dr. L. J.  Ybarrondo and PSO have
mutually agreed upon.

          1.5 The  Company  desires  Dr.  L. J.  Ybarrondo  and the C-2 Trust to
convert  436,000  shares  of Class A Voting  Common  Stock to Class B  Nonvoting
Common  Stock  and to sell  70,000  shares of Class A Common  Stock and  436,000
shares  of  Class  B  Nonvoting  Common  Stock  to PSO to  achieve  its  goal of
shareholder diversification and to obtain a working relationship with PSO, which
will provide  certain  synergistic  opportunities  to the Company as well as the
opportunity  for the Company to expand into new geographic  territories  and new
market opportunities.

          1.6 The Board of Directors of the Company has approved the sale by Dr.
L. J.  Ybarrondo  and the C-2  Trust of 70,000  shares of Class A Voting  Common
Stock and 436,000 shares of Class B Nonvoting Common Stock to PSO for all of the
foregoing  reasons,  has waived its Right of First  Refusal  under  Article VII,
Section 4 of the Company's Bylaws, and has authorized and approved the execution
and delivery of this Agreement to PSO as a material understanding by the Company
of the benefit it will realize as a result of the above described transaction.


<PAGE>




         1.7  In  consideration  of  the  foregoing  recitals  which  constitute
material   consideration   to  the  Company,   the  Company   hereby  makes  the
representations,  warranties  and  covenants  contained  herein  to  PSO,  as an
inducement to PSO's  acquisition of 70,000 shares of Class A Voting Common Stock
and 436,000  shares of Class B Nonvoting  Common Stock from Dr. L. J.  Ybarrondo
and the C-2 Trust and upon which the  Company  recognizes  that PSO will rely in
making its acquisition of such shares.


                                   ARTICLE II

                                   DEFINITIONS

         As used in this Agreement, the following terms shall have the following
respective meanings:

         "Affiliate"  means,  as applied to the  Company or any other  specified
Person,  any Person directly or indirectly  controlling,  controlled by or under
direct or indirect common control with the Company (or other  specified  Person)
and shall also include (a) any Person who is a director or  beneficial  owner of
at least 5% of the then outstanding  equity  securities of the Company (or other
specified Person) and Family Members of any such Person, (b) any Person of which
the Company (or other  specified  Person) or an Affiliate  (as defined in clause
(a)  above) of the  Company  (or other  specified  Person)  shall,  directly  or
indirectly,  either beneficially own at least 10% of the then outstanding equity
securities or constitute at least a 10% equity participant,  and (c) in the case
of a specified Person who is an individual, any Family Member of such Person.

         "Articles of Incorporation"  means the Amended and Restated Articles of
Incorporation  of the  Company  in the form of  Exhibit A to the Stock  Purchase
Agreement.

         "Balance Sheet" means the balance sheet referred to in the definition
of "Financial Statements".

         "Balance Sheet Date" means the date of the latest Balance Sheet.

         "Broker  Costs"  means  any and all  costs,  fees and  expenses  of any
broker,  finder or placement  agent incurred by the Sellers or PSO in connection
with the transactions contemplated herein.

         "Capital  Stock"  means,  as to any Person that is a  corporation,  the
authorized  shares of such  Person's  capital  stock,  including  all classes of
common,  preferred,  voting and nonvoting  capital stock,  and, as to any Person
that is not a corporation  or an  individual,  the  ownership  interests in such
Person, including, without limitation, the right to share in profits and losses,
the  right to  receive  distributions  of cash and  property,  and the  right to
receive  allocations of items of income,  gain,  loss,  deduction and credit and
similar items from such Person,  whether or not such interests include voting or
similar  rights  entitling  the holder  thereof to  exercise  control  over such
Person.


                                                        -2-

<PAGE>



         "Class A Stock" means the Class A Voting Common Stock,  par value $0.01
per share, of the Company.

         "Class B Stock"  means the Class B Nonvoting  Common  Stock,  par value
$0.01 per share, of the Company.

         "Closing"  has the meaning  given such term in Section 2.2 of the Stock
Purchase Agreement.

         "Closing  Date" has the  meaning  given such term in Section 2.2 of the
Stock Purchase Agreement.

         "Code" means the Internal Revenue Code of 1986, as amended.

         "Commission" means the Securities and Exchange Commission.

         "Common Stock" means the Class A Stock and the Class B Stock.

         "Company" means SCIENTECH,  Inc., an Idaho  corporation.  It shall also
include its predecessor companies and any Subsidiaries which may now exist or be
established in the future.

        "Contracts" has the meaning set forth in Section 3.15 of this Agreement.

         "Employee  Benefit  Plan" means any  employee  benefit  plan within the
meaning of ss.3(3) of ERISA  maintained or  contributed to by the Company or any
ERISA Affiliate, other than a Multiemployer Plan.

         "Environmental Laws" has the meaning given such term in Section 3.22(c)
of this Agreement.

         "ERISA" means the Employee  Retirement Income Security Act of 1974, any
successor statute of similar import,  and the rules and regulations  thereunder,
collectively, and from time to time amended and in effect.

         "ERISA  Affiliate"  means  any  Person  which  is  treated  as a single
employer with the Company under ss. 414 of the Code.

         "Escrow  Agreement" means that Escrow Agreement among Sellers,  PSO and
the Escrow  Agent named  therein in the form of Exhibit B to the Stock  Purchase
Agreement.

         "Exchange Act" means the  Securities  Exchange Act of 1934, as amended,
or  any  successor  statute  thereto,  and  the  rules  and  regulations  of the
Commission  promulgated  thereunder,  all as the same  shall be in effect at the
time.

         "Family Member" means, as applied to any individual,  such individual's
spouse,  or such  individual's  child,  and each trust created for the exclusive
benefit of one or more of them.

                                                        -3-

<PAGE>




         "Financial Statements" means the audited balance sheet and statement of
income of the  Company  for the  fiscal  year  ended  January  31,  1997 and the
unaudited  related balance sheet as of March 28, 1997 (the "Balance  Sheet") and
statement of income for the period then ended for the Company.

         "Founder" means Dr. L. J. Ybarrondo, the Related Trusts and the Family
Members of Dr. L. J. Ybarrondo who are shareholders of the Company.

         "Generally accepted  accounting  principles" or "GAAP" means accounting
principles  which are (a) consistent with the principles  promulgated or adopted
by the  Financial  Accounting  Standards  Board and its  predecessors  and other
recognized principle setting bodies, in effect from time to time, (b) applied on
a basis  consistent  with prior  periods,  and (c) such that a certified  public
accountant would, insofar as the use of accounting  principles is pertinent,  be
in a  position  to base an  opinion  as to  financial  statements  in which such
principles have been properly applied.

         "Guaranteed  Pension  Plan" means any  employee  pension  benefit  plan
within  the  meaning of ss.3(2) of ERISA  maintained  or  contributed  to by the
Company  or any  ERISA  Affiliate,  the  benefits  of which  are  guaranteed  on
termination  in  full or in part by the  Pension  Benefit  Guaranty  Corporation
pursuant to Title IV of ERISA, other than a Multiemployer Plan.

         "Hazardous  Substance"  has the  meaning  given  such  term in  Section
3.22(b) of this Agreement.

          "Holders"  means  Public  Service  Company  of  Oklahoma;  Dr.  L.  J.
Ybarrondo;  the Ybarrondo  Family Trust C-2, Dr. L. J.  Ybarrondo,  Trustee;  KR
Acquisition  Corp.;  and  Roger J.  Mattson;  and any  other  Person(s)  holding
Registrable  Securities  to whom the  registration  rights  have  been  assigned
pursuant to Section 7.8 of this  Agreement,  and shall be the singular or plural
where the circumstances of the case so require; provided, however, that any such
assignee  shall only be a "Holder" if it gives written  notice to that effect to
the Company and agrees to be bound by the terms of this Agreement.

         "Indebtedness" means all obligations,  contingent and otherwise,  which
in accordance  with GAAP should be classified on the obligor's  balance sheet as
liabilities,  or to  which  reference  should  be  made  by  footnotes  thereto,
including without limitation, in any event and whether or not so classified: (a)
all debt and similar monetary obligations,  whether direct or indirect;  (b) all
liabilities secured by any mortgage,  pledge, security interest, lien, charge or
other  encumbrance  existing on  property  owned or  acquired  subject  thereto,
whether or not the liability  secured  thereby shall have been assumed;  (c) all
guaranties,  endorsements  and other  contingent  obligations  whether direct or
indirect in respect of  Indebtedness  or  performance  of others,  including any
obligation  to  supply  funds to or in any  manner  to invest  in,  directly  or
indirectly,  the  debtor,  to purchase  Indebtedness,  or to assure the owner of
Indebtedness  against loss, through an agreement to purchase goods,  supplies or
services  for  the  purpose  of  enabling  the  debtor  to make  payment  of the
Indebtedness  held by such owner or otherwise,  and (d) obligations to reimburse
issuers of any letters of credit.


                                                        -4-

<PAGE>



         "Intangible Property" has the meaning given such term in Section 3.18
hereof.

         "Licenses" has meaning given such term in Section 3.20 hereof.

         "Lien" means (a) any encumbrance,  mortgage,  pledge,  lien,  charge or
other  security  interest  of any  kind  upon  any  property  or  assets  of any
character,  or upon the income or profits  therefrom;  (b) any acquisition of or
agreement to have an option to acquire any  property or assets upon  conditional
sale or other title  retention  agreement,  device or  arrangement  (including a
capitalized  lease); or (c) any sale,  assignment,  pledge or other transfer for
security of any accounts,  general intangibles or chattel paper, with or without
recourse.

         "Material  Adverse  Effect" has the meaning  given such term in Section
3.24 hereof.

         "Multiemployer  Plan" means a multiemployer  plan within the meaning of
Section 3(37) of ERISA.

         "Option"  means the option  granted to PSO by certain of the Sellers to
purchase  shares of Common Stock owned by such Sellers,  pursuant to Article VII
of the Stock Purchase Agreement.

         "Option  Securities"  means the 206,000  shares of Common Stock PSO may
purchase upon exercise of the Option.

         "Person" means an individual,  partnership,  corporation,  association,
trust,  joint  venture,   limited  liability  company  or  other  unincorporated
organization, and any government, governmental department or agency or political
subdivision thereof.

        "PSO" means Public Service Company of Oklahoma, an Oklahoma corporation.

         "Purchased  Securities"  means  the  securities  purchased  by PSO from
Sellers pursuant to the Stock Purchase Agreement.

         "Registrable Securities" means (a) all Common Stock held by the Holders
from time to time  (whether  now owned or  hereafter  acquired);  (b) any Common
Stock or other securities  issued or issuable  pursuant to the conversion of, or
with  respect  to, any Common  Stock held by the Holders  upon any stock  split,
stock  dividend,  recapitalization,  merger,  consolidation,  reorganization  or
similar event;  and (c)  securities  issued in replacement or exchange of any of
the securities issued in clauses (a) or (b) above.

         "Registration  Expenses"  means all expenses  incident to the Company's
performance of or compliance with this Agreement, including, without limitation,
all  registration,  filing,  listing  and  National  Association  of  Securities
Dealers,  Inc. ("NASD") fees, all fees and expenses of complying with securities
or blue sky laws, all word processing,  duplicating and printing  expenses,  all
messenger and delivery  expenses,  the fees and expenses of the Company's  legal
counsel  and  independent  public  accountants,  including  the  expenses of any
special  audits  or "cold  comfort"  letters  required  by or  incident  to such
performance and compliance, and any fees and

                                                        -5-

<PAGE>



disbursements  of  underwriters  customarily  paid  by  issuers  or  sellers  of
securities;  provided,  however,  that  Registration  Expenses shall not include
underwriting  discounts and commissions or any fees or expenses of legal counsel
or the independent public accountants of any Person other than the Company.

         "Registration Rights Agreement" means this Agreement.

          "Related  Agreements"  means  the  Stock  Purchase  Agreement  and the
Exhibits  thereto,  including the Articles of  Incorporation,  Escrow Agreement,
Shareholders' Agreement, and Registration Rights Agreement.

          "Related Trusts" shall mean, collectively,  the Ybarrondo Family Trust
B, the Ybarrondo Family Trust C-1, and the Ybarrondo Family Trust C-2, each with
Dr. L. J. Ybarrondo as Trustee.

         "Securities  Act" means the Securities Act of 1933, as amended,  or any
successor  federal statute,  and the rules and regulations of the Securities and
Exchange Commission thereunder, all as the same shall be in effect at the time.

         "Sellers"  shall mean the persons  listed on Schedule  2.1 of the Stock
Purchase Agreement.

         "Shareholders' Agreement" means the Shareholders' Agreement dated as of
the date hereof  among the  Sellers,  the  Company  and  Holder,  in the form of
Exhibit C to the Stock Purchase Agreement.

          "Stock Purchase Agreement" means that certain Agreement between Dr. L.
J. Ybarrondo and Related Trusts and Family Members and Public Service Company of
Oklahoma,  dated as of even date, as well as the Exhibits and Schedules  thereto
when the circumstances so admit.

         "Subsidiary"  means any Person of which the  Company  now or  hereafter
shall at the time own, directly or indirectly  through a subsidiary,  at least a
majority  of the  outstanding  capital  stock  (or  other  beneficial  interest)
entitled to vote generally;  and the term "Subsidiaries"  shall mean all of such
Persons collectively.

         "Taxes" means (a) all net income, gross income, gross receipts,  sales,
use, ad valorem, transfer, franchise,  profits, license,  withholding,  payroll,
employment, excise, severance, stamp, occupation,  premium, property or windfall
profits taxes, or other taxes of any kind whatsoever, together with any interest
and any penalties,  additions to tax or additional amounts imposed by any taxing
authority  (domestic or foreign) upon the Company with respect to all periods or
portions thereof ending on or before the date hereof and/or (b) any liability of
the  Company  for the  payment  of any  amounts  of the  type  described  in the
immediately  preceding clause (a) as a result of being a member of an affiliated
or combined group.



                                                        -6-

<PAGE>



                                   ARTICLE III

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

         In order to induce PSO to enter into this Agreement, the Company hereby
makes the following representations and warranties:

         3.1  Organization  and Good  Standing.  The Company is duly  organized,
validly existing and in good standing in its  jurisdiction of incorporation  and
is duly qualified as a foreign  corporation and authorized to do business in all
other  jurisdictions  in which the nature of its business or property makes such
qualification  necessary  and where  the  failure  to so  qualify  would  have a
Material Adverse Effect.

         3.2  Authorization.  The  execution,  delivery and  performance  by the
Company of this Agreement and of each Related  Agreement to which the Company is
a party:  (a) are within the Company's  power and authority;  (b) have been duly
authorized by all necessary corporate, shareholder and other proceedings, as the
case may be; and (c) do not and will not result in the creation of any Lien upon
any of the  property of the Company or conflict  with or result in any breach of
any provision of the Articles of  Incorporation or by-laws of the Company or any
law, regulation,  order, judgment, writ, injunction,  license, permit, agreement
or instrument to which the Company is subject.

         3.3  Enforceability.  The execution and delivery by the Company of this
Agreement  and of each of the Related  Agreements  to which it is a party,  will
result in legally binding obligations of the Company,  enforceable against it in
accordance with the respective terms and provisions hereof and thereof.

         3.4      Capitalization.

                  (a) As soon as is reasonably  practicable  after Closing,  the
Company shall amend its Articles of Incorporation in the form of Exhibit A. Upon
the  filing of  Exhibit  A with the Idaho  Secretary  of State,  the  authorized
capital stock of the Company shall consist solely of 7,000,000  shares of Common
Stock,  $0.01 par value per share,  consisting  of  6,000,000  shares of Class A
Voting  Common Stock and  1,000,000  shares of Class B Nonvoting  Common  Stock.
Schedule 3.4(a) sets forth a table indicating the  capitalization of the Company
immediately  prior to the execution of this Agreement.  All of the issued shares
of Capital  Stock of the Company  are issued and owned by the Persons  listed on
Schedule  3.4(a)  and  have  been  duly  authorized,   are  validly  issued  and
outstanding and are fully paid and non-assessable.

                  (b)  Except  as set  forth on  Schedule  3.4(b),  there are no
material outstanding rights (either preemptive or other) or options to subscribe
for or purchase from the Company,  or any material  warrants or other agreements
providing  for or  requiring  the  issuance  or  purchase by the Company of, any
Capital  Stock or any  securities  convertible  into or  exchangeable,  for,  or
exercisable  into, its Capital Stock or any material  voting trusts,  proxies or
agreements  relating to the voting of the Company's  Capital Stock. For purposes
of this Section 3.4(b), "material" shall mean any agreement or agreements which,
individually or in the aggregate, would affect more than 5,000 shares of capital
stock of the Company.

                                                        -7-

<PAGE>




         3.5      Subsidiaries.  All the Company's Subsidiaries are listed on 
Schedule 3.5.

         3.6 Consents.  Except as set forth in Schedule 3.6 hereto, or except as
otherwise  required  under  applicable  federal and state  securities  law,  the
execution, delivery and performance by the Company of this Agreement and of each
Related  Agreement  to which  it is a party,  and the  execution,  delivery  and
performance by the Sellers of the Stock  Purchase  Agreement and of each Related
Agreement to which they are parties,  and the sale of the  Purchased  Securities
and the  grant of the  Option  or Option  Securities  under  the Stock  Purchase
Agreement  and the  issuance of any Common Stock upon  conversion  of any of the
Purchased  Securities  or  Option  Securities  do not and will not  require  the
approval or consent of, or any filing with, any governmental authority or agency
or any other Person.

         3.7      Reports and Financial Statement; Undisclosed Liabilities.

                  (a)      Complete and correct copies of the Financial 
Statements are attached hereto as Schedule 3.7.

                  (b) Except as otherwise  specifically  disclosed therein, each
of the audited Financial Statements as of January 31, 1997 and for the year then
ended was prepared in accordance  with GAAP applied on a basis  consistent  with
prior periods  except as otherwise  stated  therein;  each of the balance sheets
included in the audited  Financial  Statements  fairly  presents  the  financial
condition  of the Company as at the close of business on the date  thereof;  and
each of the statements of income  included in the audited  Financial  Statements
fairly  presents the results of  operations of the Company for the fiscal period
then ended. The Company has no liabilities or obligations of any nature, whether
absolute,  accrued,  contingent or otherwise,  which are not fully  reflected or
reserved  against in the audited  Financial  Statements,  except for liabilities
that may have arisen in the ordinary and usual course of business and consistent
with past  practice and that  individually  or in the  aggregate do not have and
could not reasonably be expected to have a Material Adverse Effect.

                  (c)  To  the  best  of  the  Company's  knowledge,  except  as
otherwise  specifically  disclosed therein, the Balance Sheet of the Company has
been prepared by management of the Company in good faith and in accordance  with
GAAP, consistently applied. To the best of the Company's knowledge,  the Company
will not have any material liabilities,  contingent or otherwise,  which are not
referred to in such Balance Sheet or in the notes thereto other than liabilities
incurred in the  ordinary  course of the  Company's  business  since the Balance
Sheet Date,  and  liabilities  not required to be disclosed in  accordance  with
GAAP.

                  (d) Since the Balance  Sheet Date,  there has been no material
adverse change in the business,  assets, financial condition or prospects of the
Company.

          3.8 Absence of Certain  Developments.  Except for  entering  into this
Agreement  and Related  Agreements,  as  applicable,  and except as disclosed on
Schedule 3.8 hereof, since the
Balance Sheet Date:


                                                        -8-

<PAGE>



                  (a)  Except  for  minor   variations   which  do  not,  either
individually  or in the  aggregate,  have a  material  adverse  effect  on PSO's
rights, the Company has not, whether or not in the ordinary course of business:

                           (i)  issued any Capital Stock or other equity
         interest or any right, options or warrants with respect thereto;

                           (ii) declared,  set aside,  paid to a reserve fund or
         made any  payment  or  distribution  of cash or other  property  to its
         stockholders or equity holders with respect to any class of its Capital
         Stock or other  equity  interest or purchased or redeemed any shares of
         its Capital Stock or other equity interests;

                           (iii)    suffered any substantial loss to any of its 
         material assets;

                           (iv)  made any  increases  in the base  compensation,
         bonuses,  paid  vacation  time  allowed  or  fringe  benefits  for  its
         directors,  officers,  partners,  employees or consultants,  except for
         normal  periodic  increases in base  compensation  for  employees  made
         pursuant to established compensation policies;

                           (v) suffered  damage,  destruction  or other casualty
         loss, or forfeiture of, any property or assets,  whether or not covered
         by  insurance,  which has had or may  reasonably  be expected to have a
         Material Adverse Effect;

                           (vi)     made any capital expenditures, additions or 
         improvements or commitments for the same, except those which do not 
         exceed $500,000 in the aggregate;

                           (vii)  entered  into  any  contract,   commitment  or
         agreement  under which it has  outstanding  Indebtedness  for  borrowed
         money or for the  deferred  purchase  price of  property  in  excess of
         $500,000, or has the right or obligation to incur any such indebtedness
         or  obligation,  or made any loan or advance  to any Person  other than
         advances to employees for business  expenses not  exceeding  $20,000 in
         the aggregate;

                           (viii) paid any bonuses,  deferred or  otherwise,  or
         deferred any compensation to any of its directors,  officers,  partners
         or employees except as reflected in the Financial Statements;

                           (ix)     made any material change in accounting 
         procedures, policies or practices;

                           (x)  mortgaged  or pledged any of its  properties  or
         assets,  tangible or intangible,  or subjected them to any Lien, except
         Liens for current  property  taxes not yet due and payable and Liens on
         personal   property  created  in  connection  with  equipment   leases,
         installment purchase contracts,  conditional sales contracts,  purchase
         money mortgages and the like to secure Indebtedness incurred to acquire
         property not exceeding $500,000 in the aggregate;


                                                        -9-

<PAGE>



                           (xi)  entered  into  any  agreement  or   arrangement
         granting any rights to purchase or lease any of its assets,  properties
         or rights or  requiring  the  consent  of any  Person to the  transfer,
         assignment or lease of any such assets, properties or rights; or

                           (xii)    entered into any agreement or understanding
         to do any of the foregoing.

                  (b)      Other than in the ordinary course of business 
consistent with past practice, the Company has not:

                           (i)      sold, leased, subleased, assigned or 
         transferred any of its tangible or intangible properties or assets, or 
         canceled, waived or compromised any debts or claims;

                           (ii)    entered into any other material transaction, 
         or any amendment of any contract, lease, agreement or license which is 
         material to its business; or

                           (iii)    entered into any agreement or understanding 
         to do any of the foregoing.

         3.9 Liens.  The Company has no Liens upon any of its  properties  other
than the Liens  which are listed on  Schedule  3.9 hereto and Liens on  personal
property  created in connection  with  equipment  leases,  installment  purchase
contracts, conditional sales contracts, purchase money mortgages and the like to
secure  Indebtedness  incurred to acquire property not exceeding $500,000 in the
aggregate.

         3.10 Indebtedness to and from Officers, Directors and Others. Except as
set forth on Schedule  3.10 hereto,  the Company is not indebted to any Founder,
director,  officer,  partner, manager, employee or consultant of the Company, or
to any  Affiliate  of the  Company,  except for amounts due as normal  salaries,
wages or  reimbursement  of  ordinary  business  expenses  or  routine  employee
advances for  expenses,  which  business  expenses and employee  advances do not
exceed  $100,000 in the aggregate for all such  Founders,  directors,  officers,
partners,  managers, employees and consultants and not exceeding $15,000 for any
such  Person.  Except as set  forth on  Schedule  3.10,  no  Founder,  director,
officer,  partner,  manager,  employee  or  consultant  of the  Company  nor any
Affiliate  of the Company,  is now, or on the Closing Date will be,  indebted to
the Company except for ordinary business expense advances.

         3.11  Insurance.  Certificates  of  insurance  listing all  policies of
title,  liability,  fire,  worker's  compensation  and other forms of  insurance
(including bonds) insuring the properties, assets and operations of the business
of the Company have been  provided to PSO.  Except as set forth on Schedule 3.11
hereto,  all such policies are in full force and effect,  have been underwritten
by unaffiliated  insurers and are sufficient for all applicable  requirements of
law. All such policies shall continue in full force and effect after the Closing
Date with respect to occurrences  which would have been covered by such policies
prior to the Closing Date, except to the extent the Company's Board of Directors
determines that such policies or coverages should be changed.


                                                       -10-

<PAGE>



         3.12 Tax  Returns.  The  Company  has filed all Tax returns and reports
which  are  required  to be filed  with  any  foreign,  federal,  state or local
governmental  authority  or agency and has paid all Taxes which have become due,
and made  adequate  provision for the payment of all Taxes that will become due,
under  applicable  foreign,   federal,   state  or  local  governmental  law  or
regulations  with  respect to the  periods in respect of which such  returns and
reports were filed, and all assessments of Taxes. The Company and its management
knows of no additional  assessments  since the date of such returns and reports,
and  there  will  be no  additional  assessments  for  which  adequate  reserves
appearing on the Balance  Sheet have not been  established.  The Company and its
Subsidiaries, if any, has made adequate provisions for all current Taxes.

         3.13     [This section is intentionally left blank].

         3.14 Title to Assets.  The Company owns all of its  respective  assets,
and has good and marketable title with respect thereto, reflected in the Balance
Sheet of the Company and its Subsidiaries, as at the Balance Sheet Date, subject
to changes in the  ordinary  course of business  since the  Balance  Sheet Date,
subject to no Liens other than those granted to First Union Bank of Virginia.

         3.15     Material Contracts and Obligations.

                  (a) Attached  hereto as Schedule 3.15 is a true,  complete and
accurate list,  categorized by subject matter, of all of the following  material
outstanding  contracts,  plans,  leases,  and commitments  and other  agreements
(collectively  "Contracts") entered into by the Company, which are in writing or
have been orally agreed to by the Company:

                           (i)  all  Contracts  for  the  purchase  or  sale  of
         services,  materials,  products or  supplies  which  involve  aggregate
         payments  by the  Company of more than  $750,000  or involve  aggregate
         payments to the Company of more than  $750,000,  or which were  entered
         into other than in the ordinary course of business of the Company;

                           (ii) all  Contracts  or  arrangements  providing  for
         stock  options  or stock  purchases,  bonuses,  pensions,  deferred  or
         incentive    compensation,    retirement    or   severance    payments,
         profit-sharing,  insurance or other  benefit  plans or programs for the
         Founder  or  any  officer,  consultant,  director  or  employee  of the
         Company;

                           (iii)  all  Contracts  for  construction  or for  the
         purchase of real estate, improvements,  fixtures, equipment,  machinery
         and other items which under GAAP constitute  capital  expenditures  and
         which  individually  or in the aggregate for any related group of items
         involve expenditures of the Company in excess of $500,000;

                           (iv) all  Contracts  relating to the rental or use of
         equipment,  vehicles,  other personal property or fixtures,  except for
         Contracts individually involving payment of annual rentals or sums less
         than $75,000 and in the aggregate for the Company less than $750,000;


                                                       -11-

<PAGE>



                           (v) all  Contracts  relating  in any way to direct or
         indirect  indebtedness  for  borrowed  money  or  evidenced  by a bond,
         debenture,  note or other evidence of indebtedness  (whether secured or
         unsecured)  of or  to  the  Company,  including  but  not  limited  to,
         indebtedness  by way of  lease  or  installment  purchase  arrangement,
         guarantee,  reimbursement  obligations pertaining to letters of credit,
         purchase price discount obligations,  undertakings on which others rely
         in  extending  credit,  or  otherwise,  and  all  mortgages,   pledges,
         conditional sales contracts,  chattel and purchase-money  mortgages and
         other   security   arrangements   with  respect  to  any  real  estate,
         improvements,  equipment,  other personal property or fixtures, used or
         owned by the Company,  except in each case for  contracts  individually
         involving less than $100,000;

                           (vi)  all  Contracts  substantially  restricting  the
         Company  from  engaging in any line of business or  competing  with any
         Person or in any  geographical  area, or from using or  disclosing  any
         information in its possession (other than routine supplier and customer
         confidentiality agreements);

                           (vii) all license  agreements  with  annual  costs in
         excess of $250,000, either as licensor or licensee, other than licenses
         for software;

                           (viii)   all joint venture Contracts and other 
         Contracts involving a sharing of profits, revenue or cash flow;

                           (ix)     all Contracts with any Affiliate of the 
         Company (other than the Related Agreements) and all Contracts not made 
         in the ordinary course of its business;

                           (x) all other  Contracts,  except those which are (A)
         cancelable  on 30 days' or less  notice  without  any  penalty or other
         financial  obligation  or  (B) if not  so  cancelable,  involve  annual
         aggregate payments by or to the Company of $75,000 or less; or

                           (xi) all written  Contracts  of  employment  with any
         officer,  consultant,  director or employee and any such oral Contracts
         which are not terminable at will by the Company.

                  (b) Except as set forth on Schedule 3.15 hereto, all Contracts
required to be disclosed to PSO pursuant to this Section 3.15 are valid, binding
and in full force and effect as to the Company,  and neither the Company nor, to
the best of the Company's  knowledge,  any other party  thereto,  is in material
breach or violation of, or material  default under,  nor is there any reasonable
basis for a claim of such breach or  violation by the Company or such default by
the Company  under,  the terms of any such  Contract,  and no event has occurred
which  constitutes  or,  with the lapse of time or the giving of notice or both,
would constitute, such a material breach, violation or default by the Company.

                  (c)      Set forth on Schedule 3.15(c) is a list of all 
          Contracts having a funded remaining balance of $750,000 or more.

         3.16     Real Property Owned.  The Company does not own any real 
property.

                                                       -12-

<PAGE>




         3.17 Real and Personal  Property - Leased. To the best of the Company's
knowledge,  set forth in Schedule 3.17 hereto is a true and accurate description
of all real and material personal property leased by the Company,  setting forth
(a) the name of the lessor and (b) a description  of the property  leased.  With
respect to such leases,  the property described in such leases is presently used
by the Company as indicated  in Schedule  3.17 as lessee under the terms of such
leases, and such leases are in full force and effect, and will be free and clear
of all Liens created by the Company except as set forth in Schedule 3.17 hereto,
and  neither  the  Company  is in  default of the terms of any such lease in any
material respect nor, to the best of the Company's  knowledge,  is any lessor in
default  in any  material  respect  under  any such  lease  nor have any  events
occurred which,  with the giving of notice or the lapse of time, or both,  would
be a default under any such lease.  The Company has made available to PSO a true
and correct copy of all leases set forth on Schedule 3.17.

         3.18 Proprietary Rights. To the best of the Company's knowledge, except
as  set  forth  on  Schedule  3.18,  the  Company  owns  all  material  patents,
trademarks,   trade  names,   service  marks,   logos,   copyrights,   including
applications  therefor,  inventions,  formulas,  methods and processes (all such
items being hereinafter referred to as "Intangible  Property") presently used by
the Company without any infringement upon the proprietary  rights of others; all
material  patents,   patent  applications,   registered  trademarks,   trademark
applications, trade names, service marks, logos, licenses and copyrights used or
owned by the Company in connection with its respective  businesses are set forth
on Schedule 3.18 hereto and have been duly registered in, filed in, or issued by
the United States  Patent  Office,  United States  Register of Copyrights or the
corresponding offices of other jurisdictions,  to the extent necessary to effect
lawful  ownership  of  such  intellectual  property  rights  in the  name of the
Company,  and have been properly  maintained  or renewed in accordance  with all
applicable provisions of applicable law; and Schedule 3.18 accurately sets forth
with respect to each patent, patent application, registered trademark, trademark
application, trade name, service mark, logo, license and copyright owned or used
by the Company in the conduct of its businesses,  (i) the date of expiration, if
any, (ii) whether such ownership  rights are exclusive and (iii) any licensee of
such  rights.  No  royalties or fees are payable by the Company to any Person by
reason of the ownership or use of any of the Intangible  Property.  All items of
Intangible  Property are valid and in good  standing,  and they are adequate and
sufficient to permit the Company to conduct its business as presently conducted,
and to the best of the  Company's  knowledge  no other  rights  of any kind with
respect  to the  Intangible  Property  are  required  by  the  Company  for  its
operations as presently  conducted.  Except as set forth on Schedule  3.18,  the
Company has the sole and exclusive right to use the Intangible  Property and the
Company has not entered into any licenses, sublicenses or agreements relating to
the use by any other Person of any  Intangible  Property  now in effect,  and no
infringement exists upon the Intangible Property by any other Person.  Except as
disclosed on Schedule 3.18 hereto,  no charge or claim is pending or threatened,
nor has any charge or claim been made  against the Company  within the past five
years to the effect that the sale of any of its respective  products or services
infringes upon or conflicts in any way with any rights or properties of the type
enumerated above owned or held by any other Person.

         3.19  Necessary  Property;  Condition of  Property.  To the best of the
Company's  knowledge,  the properties and assets owned, leased by or licensed to
the Company, and reflected in the Balance Sheet,  constitute all of the real and
personal  properties,  tangible and  intangible,  which are  necessary,  used or
useful in the conduct of its business in the manner and to the extent

                                                       -13-

<PAGE>



presently  conducted  or as presently  contemplated  to be  conducted.  No other
material  real or  personal  properties  are  required  for the  conduct  of the
business of the Company as presently conducted.

         3.20 Necessary Licenses. To the best of the Company's knowledge, except
as set forth on Schedule 3.20, the Company has all licenses,  permits, consents,
concessions   and  other   authorizations   of   governmental,   regulatory   or
administrative  agencies or authorities,  whether  foreign,  federal,  state, or
local  (collectively  "Licenses"),  required to own and lease its properties and
assets and to conduct its business as now conducted  except where the failure to
have such Licenses would not have a Material Adverse Effect. Except as specified
in  Schedule  3.20  hereto (or  exempted by  Schedule  3.6),  no  registrations,
filings,   applications,   notices,  transfers,   consents,  approvals,  audits,
qualifications, waivers or other action of any kind is required by virtue of the
execution  and  delivery  of  this  Agreement,  or of  the  consummation  of the
transactions  contemplated  hereby (a) to avoid the loss of any such  License or
any asset,  property or right pursuant to the terms thereof, or the violation or
breach of any law  applicable  thereto or (b) to enable the  Company to hold and
enjoy  the same  after  the  Closing  Date in the  conduct  of its  business  as
conducted prior to the Closing Date.

         3.21     Compliance with Law.

                  (a) To the best of the Company's  knowledge,  except as may be
set forth on Schedule 3.21(a) hereto, the Company is not in default under, or in
violation  of, any law  (including,  without  limitation,  laws  relating to the
issuance  or sale of  securities,  antitrust,  zoning  and  building  codes  and
ordinances,   occupational   safety,   the   protection   of  the   environment,
transportation,  storage or disposal of hazardous waste,  anti-pollution and air
and water quality laws), or any licenses, franchises, permits, authorizations or
concessions granted by, or any judgment,  decree, writ,  injunction or order of,
any governmental or regulatory  authority,  applicable to its business or any of
its properties or assets,  except where such defaults and violations  would not,
in the aggregate,  have a Material Adverse Effect.  The Company has not received
any notification alleging any violations of any of the foregoing within the last
five years with respect to which adequate corrective action has not been taken.

                  (b) To the  best of the  Company's  knowledge,  no  event  has
occurred which (i) could result in the Company being found  unqualified to hold,
or which  permits,  or after notice or lapse of time or both would  permit,  the
revocation or termination of any of the Licenses or the denial of an application
for the renewal  thereof or (ii) would result in any impairment of the rights of
the Company as holder of any such License.

                  (c) To the best of the  Company's  knowledge,  no  present  or
former stockholder,  officer, director, employee or agent of the Company, has in
order to assist  the  Company  in  obtaining  or  retaining  any  License or any
business for or with, or directing business to Company offered,  paid,  promised
to pay or authorized the payment of the money,  or offered,  given,  promised to
give,  or  authorized  the  giving of  anything  of value to (i) any  officer or
employee of any government or any department,  agency,  instrumentality thereof,
or any  person  acting  in an  official  capacity  for or on  behalf of any such
government or department, agency or instrumentality (such an officer or employee
being referred to as a "foreign official"),  (ii) any foreign political party or
official thereof or any candidate for foreign political office, or (iii) any

                                                       -14-

<PAGE>



person, while knowing that all or a portion of such money or thing of value will
be offered, given, or promised, directly or indirectly, to any foreign official,
to any foreign  political  party or official  thereof,  or to any  candidate for
foreign political office, in each case, for purposes of the following:

                           (A)  illegally  or corruptly  influencing  any act or
         decision  of any such  foreign  official,  political  party or official
         thereof,  or  candidate in such  person's  official  capacity,  or (ii)
         inducing such foreign official, political party or official thereof, or
         candidate  to do or omit to do any act in  violation of the lawful duty
         of such person, or

                           (B)  illegally  or  corruptly  inducing  such foreign
         official, political party or official thereof, or candidate to use such
         person's influence with a foreign government or instrumentality thereof
         to  affect or  influence  any act or  decision  of such  government  or
         instrumentality.

                  There is not now, nor has there ever been,  any  employment of
or beneficial ownership of the Company by any governmental or political official
in any country in the world.

         3.22     Environmental Compliance.

                  (a) To the best of the  Company's  knowledge,  (i) the Company
has not generated, used, transported,  treated, stored, released or disposed of,
and has not  suffered or  permitted  anyone else to  generate,  use,  transport,
treat,  store,  release or dispose of any "Hazardous  Substance" (as hereinafter
defined) in violation of any "Environmental Laws" (as hereinafter defined); (ii)
there has not been any  generation,  use,  transportation,  treatment,  storage,
release or disposal of any Hazardous Substance resulting from the conduct of the
Company or the use of any  property or facility by the Company or to the best of
the Company's knowledge, any nearby or adjacent properties or facilities,  which
has created or might  reasonably be expected to create any liability on the part
of the Company under the Environmental  Laws or which would require reporting to
or notification  by the Company to any  governmental  entity;  (iii) no asbestos
which  is  or  has  some   reasonable   likelihood   of   becoming   friable  or
polychlorinated  biphenyl or underground storage tank is contained in or located
at any facility  owned,  leased or used by the Company;  and (iv) any  Hazardous
Substance  handled or dealt with in any way in  connection  with the business of
the Company, whether before or during the ownership of the Company, has been and
is  being  handled  or  dealt  with  in all  respects  in  compliance  with  the
Environmental Laws in effect at the time such activities were being conducted.

                  (b)  For  purposes  of this  Agreement,  the  term  "Hazardous
Substance"  shall mean (but shall not be limited to) substances that are defined
or listed in, or otherwise classified pursuant to, any applicable  Environmental
Laws as "hazardous  substances,"  "hazardous  materials"  "hazardous  wastes" or
"toxic  substances,"  or any  other  formulation  intended  to  define,  list or
classify  substances by reason of deleterious  properties such as  ignitability,
corrosivity, reactivity, radioactivity,  carcinogenicity,  reproductive toxicity
or "EP toxicity," and petroleum and drilling  fluids,  produced waters and other
wastes associated with the exploration, development, or production of crude oil,
natural gas or geothermal energy.


                                                       -15-

<PAGE>



                  (c) For purposes of this  Agreement,  the term  "Environmental
Laws" shall mean the  Comprehensive  Environmental  Response,  Compensation  and
Liability Act of 1980, as amended,  the Resources  Conservation and Recovery Act
of  1976,  as  amended,  and  any  applicable  statutes,   regulations,   rules,
ordinances,  codes, licenses, permits, orders, approvals, plans, authorizations,
concessions,   and  similar  items  of  all  governmental  authorities  and  all
applicable  judicial,  administrative  and  regulatory  decrees,  judgments  and
orders, any of which relate to the protection of human health or the environment
from the effects of Hazardous Substances,  including,  but not limited to, those
pertaining to reporting,  licensing,  permitting,  investigating and remediating
emissions,  discharges,  releases or threatened releases of Hazardous Substances
into  the  air,  surface  water,   groundwater  or  land,  or  relating  to  the
manufacture,   processing,  distribution,  use,  treatment,  storage,  disposal,
transport or handling of Hazardous Substances.

         3.23 Litigation. To the best of the Company's knowledge,  except as set
forth on Schedule 3.23 hereto,  there is no suit, claim,  action,  proceeding or
investigation pending or threatened against the Company or any of its respective
assets or properties,  including each Employee  Benefit Plan at law or in equity
or before any governmental authority or instrumentality or before any arbitrator
of any kind,  against the Founder,  or any  management  director,  officer,  key
employee or the holder of more than five  percent  (5%) of the capital  stock of
the Company,  nor has there occurred any event or does there exist any condition
on the basis of which any litigation, proceeding or investigation might properly
be instituted and there is no reasonable basis for any such suit, claim, action,
proceeding  or  investigation.  Except as set  forth on  Schedule  3.23  hereto,
neither the Company nor to the knowledge of the Company, any Founder, management
director,  officer, key employee or the holder of more than five percent (5%) of
the Capital Stock of the Company,  nor, to the best knowledge of the Company nor
any  Employee  Benefit  Plan has been a party to any such suit,  claim,  action,
proceeding or  investigation  during the past two years  involving its business,
assets or  properties,  nor has any such  suit,  claim,  action,  proceeding  or
investigation been threatened by or against the Company.

         3.24 No Material Adverse Changes.  Except as set forth on Schedule 3.24
hereto,  since the Balance  Sheet Date,  there has occurred no material  adverse
change  in  the  business,   assets,   properties   (tangible  and  intangible),
operations,  condition  (financial or otherwise) or  liabilities of the Company,
whether or not in the ordinary course of business,  whether separately or in the
aggregate with other occurrences or developments, and whether insured against or
not (a  "Material  Adverse  Effect"),  and the Company has no  knowledge  of any
occurrence or  development  which might  reasonably be expected to result in any
such Material Adverse Effect.

         3.25 Employee Benefit Plans.  Except as described on Schedule 3.25, the
Company does not maintain or operate any Employee  Benefit Plan nor has any such
Plan been maintained or operated  during the past three years.  The Company does
not maintain or contribute to any Guaranteed Pension Plan or Multiemployer Plan.
With  respect to each  Employee  Benefit  Plan listed on Schedule  3.25,  to the
extent applicable:

                  (a) Each such Employee  Benefit Plan has been  maintained  and
operated  in all  material  respects in  compliance  with its terms and with all
applicable provisions of ERISA, the Code and all applicable regulations, rulings
and other authority issued thereunder;


                                                       -16-

<PAGE>



                  (b) All contributions  required by law to have been made under
each such  Employee  Benefit Plan (without  regard to any waivers  granted under
Section  412 of the  Code)  to any fund or trust  established  thereunder  or in
connection therewith have been made by the due date thereof;

                  (c) Each such Employee  Benefit Plan intended to qualify under
Section 401(a) of the Code is the subject of a favorable unrevoked determination
letter issued by the Internal  Revenue Service as to its qualified  status under
the Code,  which  determination  letter may still be relied  upon as to such tax
qualified status, and no circumstances have occurred that would adversely affect
qualified status of any such Employee Benefit Plan;

                  (d) No Employee Benefit Plan is subject to Title IV of ERISA;

                  (e) None of such  Employee  Benefit  Plans that are  "employee
welfare  benefit  plans"  as  defined  in  Section  3(1) of ERISA  provides  for
continuing  benefits  or  coverage  for  any  participant  or  beneficiary  of a
participant  after  such  participant's  termination  of  employment,  except as
required by applicable law,  including  section 4980B of the Code or Section 601
of ERISA; and

                  (f) Neither the Company nor any trade or business  (whether or
not  incorporated)  under common  control with the Company within the meaning of
Section 4001 of ERISA has, or at any time has had, any  obligation to contribute
to any "multiemployer plan" as defined in Section 3(37) of ERISA.

         3.26  Withholding,  Contracts  and Labor  Relations.  The  Company  has
withheld all amounts  required by law or agreement to be withheld by it from the
wages,  salaries and other  payments to its  employees and is not liable for any
arrears of wages or any taxes or penalties for failure to comply with any of the
foregoing.  Except as set forth on Schedule  3.26  hereto,  the Company is not a
party to any written employment agreement, arrangement or understanding with any
of its officers,  employees,  partners or shareholders.  There are no collective
bargaining  agreements covering any of the employees of the Company. The Company
has not breached or otherwise  failed to comply in any material respect with any
provision of any collective  bargaining  agreement or other labor union contract
applicable  to any of its  employees.  No consent  of any union (or any  similar
group or  organization)  is required in connection with the  consummation of the
transactions   contemplated  hereby.   There  are  no  pending,   threatened  or
anticipated  (a)  employment  discrimination  charges or  complaints  against or
involving the Company  before any federal,  state,  or local board,  department,
commission or agency, (b) unfair labor practice charges or complaints,  disputes
or  grievances  affecting  the  Company,  (c)  union  representation   petitions
respecting the employees of the Company,  (d) efforts being made to organize any
of the employees of the Company or (e) strikes,  slow downs, work stoppages,  or
lockouts or threats thereof affecting the Company.

         3.27 Governmental Regulations.  The Company is not a "holding company",
or a "subsidiary company" of a "holding company" or an "affiliate" of a "holding
company", as such terms are defined in the Public Utility Holding Company Act of
1935, as amended; nor is the Company an "investment  company", or an "affiliated
person" or a "principal  underwriter" of an "investment  company", as such terms
are defined in the Investment Company Act of 1940,

                                                       -17-

<PAGE>



as amended.  The Company is not now, nor has it been within the past five years,
a "United States real property holding corporation" as defined in Section 897 of
the Code.

         3.28  Corporate  Documents,  Books and  Records.  Complete  and correct
copies of the  Articles of  Incorporation  and  by-laws,  and of all  amendments
thereto,  of the  Company  and  each  of the  predecessor  companies  have  been
previously  made available to PSO, and no changes in said documents will be made
on or before the Closing  Date other than as disclosed  to, and  concurred to in
writing by,  PSO.  The minute  books of the Company and each of the  predecessor
companies  contain  accurate  records of all  meetings  and  consents in lieu of
meetings of the Board (and its committees) and  shareholders of each corporation
since  incorporation.  Except as  reflected in such minute  books,  there are no
minutes  of  meetings  or  consents  in lieu of  meetings  of the  Board (or its
committees) or of the shareholders of the Company.  The books and records of the
Company  accurately  reflect the transactions to which the Company is a party or
by which its  properties  are subject or bound,  and such books and records have
been properly kept and maintained in all material respects.

         3.29  Broker  Costs.  Neither  the  Company  nor,  to the  best of the
Company's knowledge,  the Sellers, is obligated for any Broker Costs relating to
the transactions contemplated by the Stock Purchase Agreement.

         3.30 Disclosure. No representation,  warranty or statement made in this
Agreement,  any Related Agreement, or any agreement,  certificate,  statement or
document  furnished  by or on  behalf  of the  Company  in  connection  with the
purchase of the  Purchased  Securities  or grant of the Option  contains or will
contain any untrue  statement of material fact or omits to state a material fact
necessary in order to make the statements  contained herein or therein, in light
of the circumstances in which they were made, not misleading.

         3.31     Certain Agreements of Officers and Employees.

                  (a) No officer or key  employee  of the  Company is, or is now
expected to be, in  violation  of any term of any  employment  contract,  patent
disclosure  agreement,   proprietary   information   agreement,   noncompetition
agreement,  nonsolicitation  agreement,  or any other  contract or  agreement or
restrictive covenant relating to the right of any such officer or employee to be
an  employee,  to be  employed by the  Company,  or because of the nature of the
business conducted or proposed to be conducted by the Company or relating to the
use of trade secrets or proprietary  information of others, and to the Company's
best knowledge and belief,  the continued  employment of the Company's  officers
and employees  does not subject the Company or PSO to any liability with respect
to any of the foregoing matters.

                  (b)  Except  as set  forth on  Schedule  3.31(b),  to the best
knowledge of the Company, no officer of the Company, nor any key employee of the
Company whose termination, either individually or in the aggregate, would have a
Material Adverse Effect on the Company, has any present intention of terminating
his or her employment with the Company.

                  (c)      For purposes of this Agreement, "key employee" means 
any of the Persons described on Schedule 3.31(c).

                                                       -18-

<PAGE>




         3.32 Registration Rights.  Except for the rights granted to the Holders
pursuant to this Agreement, no Person has demand or other registration rights to
cause the Company to file any  registration  statement  under the Securities Act
relating to the  securities  of the Company or any right to  participate  in any
such registration statement.


                                   ARTICLE IV

                               REGISTRATION RIGHTS

         4.1      Registration.

                  (a)  Requested  Registration.  At any time after  February  1,
2001, and before  February 1, 2011,  upon written  request by the Holders of the
minimum  number of Registrable  Securities  stated below that the Company effect
the  registration  under the  Securities  Act of all or part of the  Registrable
Securities (a "Requested Registration"),  the Company will use its best efforts,
consistent  with practices  customary in agreements of this nature,  to register
under the Securities Act the Registrable  Securities  which the Company has been
so  requested  to register by the Holders  within one hundred  twenty (120) days
after  receipt of such request or within  sixty (60) days after  receipt of such
request  if the  Company  is  qualified  to  file a  registration  statement  on
Commission  Form  S-3  or  any  successor  short-form   registration   statement
(collectively, "Commission Form S-3"); provided, however, that the Company shall
not be  obligated  to effect a Requested  Registration  pursuant to this Section
4.1(a) during the one hundred eighty (180) day period immediately  following the
commencement  of  the  Company's  public  offering  of  equity  securities;  and
provided,  further,  that (i) the  Company  shall not be  obligated  to effect a
Requested  Registration of all or part of the Registrable Securities under cover
of any form other than  Commission  Form S-3, unless (A) the Holders of at least
60% of the  Registrable  Securities  make such  request,  and (B) the  number of
Registrable  Securities in the Requested  Registration  exceeds  500,000 shares,
(ii) the Company  shall not be obligated to effect a Requested  Registration  of
all or part of the  Registrable  Securities  under cover of Commission  Form S-3
unless  (A)  the  Holders  of in  excess  of at  least  50% of  the  Registrable
Securities  make such request,  and (B) the number of Registrable  Securities in
the  Requested  Registration  exceeds  100,000  shares,  and (iii) the number of
shares  specified in (i) and (ii) shall be  proportionately  adjusted to reflect
any  merger,  consolidation,   reorganization,   stock  dividend,  stock  split,
combination of shares, reclassification, recapitalization, automatic conversion,
redemption  or  other  similar  event  affecting  the  number  or  character  of
outstanding  shares of  Common  Stock.  The  Company  must  effect up to six (6)
registrations  pursuant to this Section 4.1(a) to the extent such  registrations
may be effected on  Commission  Form S-3, but the Company shall not be obligated
to effect  more than one (1)  Requested  Registration  hereunder  other  than on
Commission  Form  S-3.  In the  event  that the  Holders  of at least 60% of the
Registrable  Securities  decide to effect a  Requested  Registration  through an
underwritten  offering,  the Company may include in such Requested  Registration
other  securities of the Company for sale, for the Company's  account or for the
account of any other Person, if and to the extent that the managing  underwriter
determines that the inclusion of such additional  shares will not interfere with
the orderly  sale of the  underwritten  securities  at a price range  reasonably
acceptable to those Holders whose  Registrable  Securities are to be included in
the  registration  statement.  If the Holders of at least 60% of the Registrable
Securities do not desire to effect the Requested

                                                       -19-

<PAGE>



Registration through an underwritten  offering,  the Company may include in such
Requested  Registration  other  securities  of the  Company  for  sale,  for the
Company's  account or for the  account of any other  Person.  Upon  receipt of a
written request pursuant to this subsection (a), the Company shall promptly give
written  notice  of such  request  to  other  Holders  and the  Company  will be
obligated to include in the Requested  Registration  such number of  Registrable
Securities  of any other  Holders  joining in such request as are specified in a
written  request by such other  Holders  received by the Company  within 20 days
after the Company gives such written notice.

                  (b) Incidental Registration.  If the Company for itself or any
of its security  holders  shall at any time or times after the date hereof,  but
before  February 1, 2011,  determine to register  under the  Securities  Act any
shares of its capital stock (other than: (i) the registration of an offer,  sale
or  other  disposition  of  securities  solely  to  employees  (or any of  their
successors  or assignees)  of, or other  Persons (or any of their  successors or
assignees)  providing  services to the Company or any Subsidiary  pursuant to an
employee or similar  benefit plan; or (ii) relating to a merger,  acquisition or
other  transaction of the type described in Rule 145 under the Securities Act or
a comparable or successor  rule,  registered on Form S-4 or similar or successor
forms),  on each such  occasion  the  Company  will  notify the  Holders of such
determination at least thirty (30) days prior to the anticipated  filing date of
such  registration  statement,  and upon the  request  of the  Holders  given in
writing within twenty (20) days after the Company gives such notice, the Company
will use best efforts, consistent with practices customary in agreements of this
nature,  as soon as  practicable  thereafter  to  cause  any of the  Registrable
Securities  specified  by  the  Holders  to be  included  in  such  registration
statement to the extent such  registration  is permissible  under the Securities
Act  and  subject  to the  conditions  of the  Securities  Act  (an  "Incidental
Registration").

                  (c) Registration Statement Form.  The Company shall, if 
permitted by law,effect any registration requested under Section 4.1 by the 
filing of a registration statement on Commission Form S-3.

                  (d) Expenses.  The Company shall pay all Registration Expenses
incurred  in  connection  with any  Incidental  Registration  and any  Requested
Registrations,  except  that each  Holder  shall be required to pay its pro rata
share of underwriting  discounts and commissions and any Commission  filing fees
and NASD fees.

                  (e) Effective Registration Statement. A Requested Registration
or an Incidental  Registration  requested  pursuant to Section 4.1(a) or Section
4.1(b),  respectively,  shall not be deemed to have been effected  unless it has
become  effective  with  the  Commission.   Notwithstanding  the  foregoing,   a
registration statement will not be deemed to have been effected if: (i) after it
has become effective with the Commission,  such  registration is interfered with
by any stop order,  injunction,  or other order or requirement of the Commission
or other  government  agency or any court proceeding for any reason other than a
misrepresentation  or  omission by Holders;  or (ii) the  conditions  to closing
specified in the purchase  agreement or underwriting  agreement  entered into in
connection  with such  registration  are not  satisfied by reason of some act or
omission by the Company.


                                                       -20-

<PAGE>



                  (f)  Priority in  Incidental  Registration.  If an  Incidental
Registration is an underwritten  registration  initiated by the Company, and the
managing  underwriters  shall give written  advice to the Company that, in their
opinion,  market conditions dictate that no more than a specified maximum number
of  securities  (the  "Underwriter's  Maximum  Number")  could  successfully  be
included  in such  Incidental  Registration,  then:  (i) the  Company  shall  be
entitled to include in such  registration  that number of  securities  which the
Company proposes to offer and sell for its own account in such  registration and
which does not exceed the  Underwriter's  Maximum  Number;  and (ii) the Company
will be obligated  and required to include in such  registration  that number of
shares of Registrable  Securities which shall have been requested by the holders
of registration rights under this Agreement and any other agreement  hereinafter
entered  into by the  Company,  pro rata based  upon the total  number of shares
requested  to be  included  by all  such  holders,  to the  full  extent  of the
remaining portion of the Underwriter's Maximum Number.

                  (g)  Right to  Delay.  Notwithstanding  anything  in  Sections
4.1(a) and (b), the Company  shall have the right to delay any  registration  of
Registrable  Securities  requested  pursuant to  Sections  4.1(a) and (b), or to
suspend  the  right  of the  Holders  to  sell or  offer  securities  under  any
previously effective registration statement,  for up to ninety (90) days if such
registration  (or offers or sales) would, in the judgment of the Company's Board
of  Directors,  substantially  interfere  with any  material  transaction  being
considered at the time of receipt of the request from the Holders.

         4.2      Registration Procedures.

                  (a) Company Duties. If and whenever the Company is required to
use best efforts  consistent  with  practices  customary in  agreements  of this
nature  to effect  the  registration  of any  Registrable  Securities  under the
Securities Act as provided in Section 4.1, the Company, subject to the terms and
conditions of Section 4.1, will:

                           (i)  prepare  and  file  with  the   Commission   the
         requisite  registration  statement to effect such  registration and use
         best efforts consistent with practices  customary in agreements of this
         nature to cause such  registration to become and remain effective for a
         period of ninety (90) days;

                           (ii) permit the  Holders to review such  registration
         statement  and to  provide  for  the  insertion  therein  of  material,
         furnished to the Company in writing,  which in the reasonable  judgment
         of the Holders and the Company and their counsel should be included;

                           (iii)  prepare  and  file  with the  Commission  such
         amendments  and  supplements  to such  registration  statement  and the
         prospectus  used in  connection  therewith  as may be necessary to keep
         such registration statement effective and to comply with the provisions
         of the Securities Act with respect to the disposition of all securities
         covered by such  registration  statement until the earlier of such time
         as all of such  securities have been disposed of in accordance with the
         intended  methods of disposition  by the seller or sellers  thereof set
         forth in such  registration  statement or the expiration of ninety (90)
         days after such registration statement becomes effective;

                                                       -21-

<PAGE>




                           (iv)  furnish to the Holders such number of conformed
         copies of such  registration  statement and of each such  amendment and
         supplement  thereto (in each case including all exhibits),  such number
         of copies of the prospectus  contained in such  registration  statement
         (including each preliminary  prospectus and any summary prospectus) and
         any other  prospectus filed under Rule 424 under the Securities Act, in
         conformity with the  requirements of the Securities Act, and such other
         documents, as the purchaser or the Holders of Registrable Securities to
         be sold under such registration statement may reasonably request;

                           (v)  use  best  efforts   consistent  with  practices
         customary  in  agreements  of this  nature to  register  or qualify all
         Registrable  Securities  covered by such  registration  statement under
         such other  United  States  state  securities  or blue sky laws of such
         jurisdictions as the Holders of Registrable Securities to be sold under
         registration   statement  shall  reasonably   request,   to  keep  such
         registration   or   qualification   in  effect  for  so  long  as  such
         registration  under the Securities Act remains in effect,  and take any
         other action which may be  reasonably  necessary or advisable to enable
         the  Holders  of   Registrable   Securities   to  be  sold  under  such
         registration   statement  to  consummate   the   disposition   in  such
         jurisdictions  of the  Registrable  Securities  owned by such  Holders,
         except that the Company  shall not for any such  purpose be required to
         (a) qualify  generally to do business as a foreign  corporation  in any
         jurisdiction  wherein  it would  not but for the  requirements  of this
         subdivision (v) be obligated to be so qualified,  or (b) subject itself
         to taxation in any such jurisdiction.

                           (vi)  use  best  efforts  consistent  with  practices
         customary  in  agreements  of this  nature  to  cause  all  Registrable
         Securities covered by such registration  statement under the Securities
         Act to be registered with or approved by such other United States state
         governmental  agencies or authorities as may be reasonably necessary to
         enable the  Holders  of  Registrable  Securities  to be sold under such
         registration  statement to consummate the intended  disposition of such
         Registrable Securities;

                           (vii) in the event of the  issuance of any stop order
         suspending the  effectiveness of the  registration  statement under the
         Securities Act, or of any order suspending or preventing the use of any
         related  prospectus or suspending the  qualification of any Registrable
         Securities  included  in such  registration  statement  for sale in any
         jurisdiction,  the  Company  shall  use best  efforts  consistent  with
         practices  customary  in  agreements  of  this  nature  to  obtain  the
         withdrawal of such order;

                           (viii) use best  efforts  consistent  with  practices
         customary  in  agreements  of this  nature to furnish to the Holders of
         Registrable Securities to be sold under such registration statement (1)
         an opinion, dated the effective date of the registration  statement, of
         the independent  counsel  representing  the Company for the purposes of
         such  registration  (or, if there is no such independent  counsel,  the
         opinion may be rendered by counsel who is an employee of the  Company),
         addressed to the  underwriters,  if any, and to the Holders making such
         request,  stating that such registration statement has become effective
         under the Securities Act and that (a) to the knowledge of such counsel,
         no stop order suspending the effectiveness  thereof has been issued and
         no proceedings  for that purpose have been instituted or are pending or
         contemplated under the Securities Act; (b)

                                                       -22-

<PAGE>



         the registration statement, the related prospectus,  and each amendment
         or supplement thereto,  comply as to form in all material respects with
         the  requirements  of the Securities  Act and the applicable  rules and
         regulations of the Commission thereunder (except that such counsel need
         express no opinion as to  financial  statements  or other  financial or
         statistical data or information  contained  therein);  (c) such counsel
         has no reason to believe that either the registration  statement or the
         prospectus, or any amendment or supplement thereto, contains any untrue
         statement of a material fact or omits a material fact necessary to make
         the statements  therein, in light of the circumstances under which they
         were made, not misleading;  (d) the  descriptions  in the  registration
         statement or the prospectus, or any amendment or supplement thereto, of
         all  legal and  governmental  matters  and  contracts  and other  legal
         documents or  instruments  are  accurate in all  material  respects and
         fairly present the information  required to be presented;  and (e) such
         counsel does not know of any legal or governmental proceedings, pending
         or contemplated, required to be described in the registration statement
         or prospectus,  or any amendment or supplement  thereto,  which are not
         described as required nor of any contracts or documents or  instruments
         of a character  required to be described in the registration  statement
         or prospectus, or any amendment or supplement thereto or to be filed as
         exhibits to the  registration  statement  which are not  described  and
         filed as required;  and (2) a letter,  dated the effective  date of the
         registration   statement,   from  the  independent   certified   public
         accountants of the Company, addressed to the underwriters,  if any, and
         to the Holders making such request,  stating that they are  independent
         certified public  accountants  within the meaning of the Securities Act
         and that in the opinion of such accountants,  the financial  statements
         and other  financial data of the Company  included in the  registration
         statement or the  prospectus,  or any amendment or supplement  thereto,
         comply  as to  form  in  all  material  respects  with  the  applicable
         accounting requirements of the Securities Act.

                  Such opinion of counsel  shall  additionally  cover such legal
         matters  with  respect  to the  registration  in  respect of which such
         opinion is being  given as the  Holders may  reasonably  request.  Such
         letter  from  the  independent   certified  public   accountants  shall
         additionally cover such other financial matters (including  information
         as to the period  ending not more than five  business days prior to the
         date of such  letter) with  respect to the  registration  in respect of
         which such letter is being given as the Holders may reasonably request;

                           (ix)  immediately  notify the Holders of  Registrable
         Securities  included in such registration  statement at any time when a
         prospectus  relating  thereto is  required  to be  delivered  under the
         Securities  Act, of the  happening  of any event as result of which the
         prospectus included in such registration  statement, as then in effect,
         includes an untrue  statement  of  material  fact or omits to state any
         material  fact  required to be stated  therein or necessary to make the
         statements  therein not  misleading  in the light of the  circumstances
         under which they were made, and at the request of the Holders  promptly
         prepare and furnish to the Holders a  reasonable  number of copies of a
         supplement to or an amendment of such prospectus as may be necessary so
         that, as  thereafter  delivered to the  purchasers of such  securities,
         such  prospectus  shall not include an untrue  statement  of a material
         fact or omit to state a material fact required to be stated therein or

                                                       -23-

<PAGE>



         necessary to make the statements therein not misleading in the light 
         of the circumstances under which they were made;

                           (x) otherwise  comply with all  applicable  rules and
         regulations  of the  Commission,  and make  available  to its  security
         holders,  as soon as  reasonably  practicable,  an  earnings  statement
         covering  the  period  of at least  twelve  months,  but not more  than
         eighteen months, beginning with the first full calendar month after the
         effective date of such registration statement, which earnings statement
         shall satisfy the provisions of Section 11(a) of the Securities Act and
         Rule 158  thereunder,  and not file any amendment or supplement to such
         registration  statement  or  prospectus  to which any Holder shall have
         reasonably  objected in writing on the grounds  that such  amendment or
         supplement   does  not  comply  in  all  material   respects  with  the
         requirements  of the  Securities  Act or of the  rules  or  regulations
         thereunder,  having  been  furnished  with a copy  thereof at least two
         business days prior to the filing thereof;

                           (xi)  provide  a  transfer  agent  (which  may be the
         Company) for all Registrable  Securities  covered by such  registration
         statement  not  later  than  the  effective  date of such  registration
         statement; and

                           (xii) list all Registrable Securities covered by such
         registration  statement on any securities  exchange on which any of the
         Registrable Securities are then listed.

                  (b) Duty of Holders to Supply  Information.  The  Company  may
require the Holders of Registrable Securities to be sold under such registration
statement,   at  the  Company's  expense,  to  furnish  the  Company  with  such
information and undertakings as it may reasonably  request regarding the Holders
and the  distribution  of such  securities  as the Company may from time to time
reasonably request in writing.

                  (c) Additional Duties of Holders. Each Holder, by execution of
this Agreement, agrees (A) that upon receipt of any notice of the Company of the
happening of any event of the kind described in Section 4.2(a)(ix),  such Holder
will forthwith discontinue its disposition of Registrable Securities pursuant to
the registration  statement  relating to such  Registrable  Securities until the
receipt by such Holder of the copies of the  supplemented or amended  prospectus
contemplated  by Section  4.2(a)(ix)  and, if so directed by the  Company,  will
deliver to the Company all copies  other than  permanent  file  copies,  then in
possession  of the  Holder  of  the  prospectus  relating  to  such  Registrable
Securities  current at the time of receipt of such notice,  and (B) that it will
immediately  notify the Company,  at any time when a prospectus  relating to the
registration  of such  Registrable  Securities is required to be delivered under
the  Securities  Act,  of the  happening  of any  event  as a  result  of  which
information  previously furnished by such Holder to the Company for inclusion in
such  prospectus  contains an untrue  statement  of a material  fact or omits to
state any material fact  required to be stated  therein or necessary to make the
statements therein not misleading in the light of the circumstances  under which
they were made. In the event the Company shall give any such notice,  the period
referred to in Section  4.2(a)(iii)  shall be extended by a number of days equal
to the number of days during the period from and  including the giving of notice
pursuant to Section  4.2(a)(ix) to and including the date when such Holder shall
have received the copies of the supplemented or amended prospectus  contemplated
by Section 4.2(a)(ix).

                                                       -24-

<PAGE>




         4.3      Underwritten Offerings.

                  (a) Underwritten Offering. In connection with any underwritten
offering pursuant to a registration  requested under Section 4.1(a), the Company
will  enter  into an  underwriting  agreement  with  the  underwriters  for such
offering,  such agreement to be in form and substance reasonably satisfactory to
the  Company  and the  Holders  of at least  60% of the  Registrable  Securities
included in the  registration in their  reasonable  judgment and to contain such
representations  and  warranties  by the  Company and the Holders and such other
terms as are  customarily  contained  in  agreements  of that  type,  including,
without  limitation,   indemnities.   The  Holders  shall  be  parties  to  such
underwriting  agreement and may, at their option, require that any or all of the
representations  and warranties by, and the other agreements on the part of, the
Company to and for the  benefit of such  underwriters  shall also be made to and
for the benefit of Holders and that any or all of the  conditions  precedent  to
the  obligations  of such  underwriters  under such  underwriting  agreement  be
conditions precedent to the obligations of the Holders. The Holders shall not be
required to make any  representations  or warranties  to or agreements  with the
Company or the underwriters other than representations, warranties or agreements
regarding the Holders and their intended  method of  distribution  and any other
representations required by law or as are customarily contained in agreements of
that type.

                  (b)  Selection of  Underwriters.  If a Requested  Registration
pursuant to Section 4.1(a) involves an underwritten  offering,  then the Company
shall select the underwriter from underwriting firms of national reputation.

                  (c) Holdback Agreements.  Each Holder agrees, if so reasonably
required by the managing underwriter in a registration  pursuant to Section 4.1,
not to effect any public sale or distribution of Registrable Securities or sales
of such  Registrable  Securities  pursuant  to Rule 144 or Rule  144A  under the
Securities  Act,  during the seven (7) days prior to and the one hundred  eighty
(180) days  after any firm  commitment  underwritten  registration  pursuant  to
Section  4.1  has  become  effective   (except  as  part  of  such  underwritten
registration) or, if the managing  underwriter  advises the Company that, in its
opinion,  no such public sale or distribution should be effected for a period of
not more than one hundred eighty (180) days after such underwritten registration
in order to complete the sale and  distribution  of securities  included in such
registration  or  facilitate  such sale and  distribution  and the Company gives
notice to such effect to the Holder of such advice,  the Holder shall not effect
any public  sale or  distribution  of  Registrable  Securities  or sales of such
Registrable  Securities  pursuant to Rule 144 or Rule 144A under the  Securities
Act during such period after such underwritten  registration,  except as part of
such underwritten  registration,  whether or not the Holder participates in such
registration.

         4.4  Preparation;  Reasonable  Investigation.  In  connection  with the
preparation and filing of each registration  statement under the Securities Act,
the Company  will give the Holders of  Registrable  Securities  to be sold under
such  registration  statement,  the  underwriters,  if any, and their respective
counsel and accountants, drafts and final copies of such registration statement,
each prospectus included therein or filed with the Commission and each amendment
thereof  or  supplement  thereto,  at least 5 business  days (or  shorter if not
reasonably  practicable)  prior to the filing thereof with the  Commission,  and
will  give  each of them  such  access  (subject  to  reasonable  and  customary
confidentiality restrictions) to its books and records and such opportunities to
discuss the business of the Company with its officers and the independent public

                                                       -25-

<PAGE>



accountants  who have certified its financial  statements as shall be necessary,
in the opinion of the  Holders and such  underwriters'  respective  counsel,  to
conduct a reasonable investigation within the meaning of the Securities Act.


                                    ARTICLE V

              COVENANTS APPLICABLE TO THE COMPANY WHILE REGISTRABLE
                       SECURITIES ARE HELD BY THE HOLDERS

         The Company  covenants that, while any Registrable  Securities are held
by the Holders,  the Company will comply with the  following  provisions  unless
otherwise approved by the Holders or otherwise specifically provided for in this
Article V.

         5.1 Corporate Existence;  Subsidiaries;  Maintenance of Properties. The
Company will preserve and keep in full force and effect its corporate existence,
rights and  franchises.  The Company will not engage in any business  other than
those  presently  conducted  or now  contemplated  by  such  Persons  and  those
businesses   substantially   similar  to  the  business  now  conducted  or  now
contemplated.  The Company will maintain all of its properties used or useful in
the conduct of its business in good condition,  repair and working order (normal
wear and tear  excepted) and cause to be made all necessary  repairs,  renewals,
replacements,  betterments and improvements  thereof,  all as in the judgment of
the Company  may be  necessary  so that the  business  carried on in  connection
therewith may be properly and advantageously  conducted at all times;  provided,
however,  that  nothing in this  Section  5.1 shall  prevent  the  Company  from
discontinuing  the operation and  maintenance of any of such  properties if such
discontinuance  is, in the judgment of the Company,  desirable in the conduct of
such Person's business and does not cause a Material Adverse Effect.

         5.2  Insurance.  The Company will maintain with  financially  sound and
reputable insurance  companies,  funds or underwriters,  insurance of the kinds,
covering the risks and in the relative  proportionate amounts usually carried by
reasonable and prudent companies  conducting  businesses  similar to that of the
Company except as otherwise determined by the Board.

         5.3 Taxes. The Company will pay and discharge,  or cause to be paid and
discharged,  before the same shall become  overdue,  all Taxes,  assessments and
other  governmental  charges  imposed upon the Company and its  respective  real
properties,  sales and  activities,  or any part thereof,  or upon the income or
profits  therefrom,  as well as all claims for labor,  materials,  or  supplies,
which if unpaid might by law become a Lien or charge upon any of its properties;
provided, however, that any such Tax, assessment, charge, levy or claim need not
be paid if the validity or amount  thereof shall  currently be contested in good
faith by appropriate  proceedings and if the Company shall have set aside on its
books adequate reserves with respect thereto;  and provided,  further,  that the
Company  will pay or cause to be paid  all  such  taxes,  assessments,  charges,
levies or claims  forthwith  upon the  commencement  of  foreclosure on any lien
which may have attached as security therefor.


                                                       -26-

<PAGE>



         5.4  Inspection of Properties  and Books.  With respect to each Holder,
the Company shall permit the Holder or any of its designated  representatives to
visit and inspect any of the properties of the Company,  to examine the books of
account of the Company (and to make copies thereof and extracts therefrom),  and
to discuss the affairs,  finances and  accounts of the Company  with,  and to be
advised as to the same by, officers or partners of such Persons, upon reasonable
prior notice and during normal  business  hours,  in a manner  calculated not to
disrupt  ongoing  business  activities  and at such  intervals as the Holder may
reasonably request;  and provided that adequate provisions are made to honor and
protect the Company's  obligation to third parties to safeguard its confidential
information.

         5.5 Compliance with Laws; Contracts and Licenses.  The Company will (a)
comply  in all  material  respects  with all  applicable  laws  and  regulations
wherever  its  business  is  conducted,  (b) comply with the  provisions  of its
Articles of Incorporation,  as amended from time to time, and bylaws, (c) comply
in all material  respects with all agreements and instruments by which it or any
of its properties may be bound, (d) comply with all applicable decrees,  orders,
and  judgments  and (e)  comply  in all  material  respects  with  all  required
approvals,  permits and licenses.  If at any time while any Registrable Security
is outstanding,  any License from any officer,  agency or instrumentality of any
government  shall become  necessary or required in order that any of the Company
or its  Subsidiaries may fulfill any of its obligations  hereunder,  each of the
Company  and its  Subsidiaries  will  promptly  take or cause  to be  taken  all
reasonable  steps  within its power to obtain such  License and furnish  Holders
with evidence thereof.

         5.6 Financial and Other Information.  The Company shall deliver to each
Holder the following (provided, however, that the Company shall not be obligated
to  provide  information  that it  deems  in good  faith  to be  proprietary  or
confidential unless the Holder provides reasonable assurances in writing that it
will maintain the confidentiality of the information):

                  (a) as  soon  as  practicable,  but in any  event  within  one
hundred twenty (120) days after the end of each fiscal year, an audited  balance
sheet as of the fiscal  year-end and audited  statements of operations,  sources
and uses of funds, and stockholders' equity for the fiscal year;

                  (b) as soon as practicable, but in any event within forty-five
(45) days after the end of each of the first three fiscal quarters, an unaudited
balance  sheet  of the  Company  as of the end of  such  fiscal  quarter  and an
unaudited statement of operations for such fiscal quarter;

                  (c) as soon as  practicable,  but in any event  within  thirty
(30) days after the end of each fiscal year of the Company, an annual budget and
business plan for the forthcoming year; and

                  (e)  such  other   information   relating  to  the   financial
condition, business, prospects or corporate affairs of the Company as the Holder
may from time to time reasonably request.

         5.7 Covenants Relating to Rule 144.  With a view to making available 
the benefits of certain rules and regulations of the Commission which may at 
any time permit the sale of

                                                       -27-

<PAGE>



securities of the Company to the public without  registration after such time as
the Company is subject to the  reporting  requirements  of the Exchange Act, the
Company agrees:

                  (a) To make and keep public  information  available,  as those
terms are understood  and defined in Rule 144 under the  Securities  Act, at all
times after the effective  date of the first  registration  under the Securities
Act filed by the  Company  for an  offering  of its  securities  to the  general
public;

                  (b) To file with the Commission in a timely manner all reports
and other  documents  required of the Company under the  Securities  Act and the
Exchange Act, as amended (at any time after it has become, and so long as it is,
subject to such reporting requirements); and

                  (c) So long as a Holder owns any  Registrable  Securities,  to
furnish to the Holder forthwith upon request a written  statement by the Company
as to its compliance  with the reporting  requirements  of said Rule 144 (at any
time after 90 days after the effective date of the first registration  statement
filed by the Company for an offering of its  securities to the general  public),
and of the Securities Act and the Exchange Act (at any time after it has become,
and so long as it is, subject to such reporting requirements) a copy of the most
recent  annual or quarterly  report of the Company,  and such other  reports and
documents of the Company as a Holder may reasonably  request in availing  itself
of any rule or regulation of the  Commission  allowing a Holder to sell any such
securities without registration.

         5.8      Dilutive Issuances.

                  (a) The Company  agrees that it will not,  without the consent
of PSO,  issue any shares of Common  Stock on a Fully  Diluted  Basis at a price
lower than  $6.00 per  share,  proportionately  adjusted  to  reflect  any stock
dividend,    stock    split,    combination    of   shares,    reclassification,
recapitalization,  automatic  conversion,  redemption  or  other  similar  event
affecting  the  number or  character  of  outstanding  shares  of Common  Stock;
provided,  the  provisions  of this  Section  5.8 shall not apply to (i) Options
issued to any  employees  of the  Company  pursuant to any  Approved  Management
Incentive  Plan;  (ii) Common Stock  issued  pursuant to the exercise of Options
granted under any Approved Management  Incentive Plan; and (iii) shares of Class
A Stock issued to the holder of shares of Class B Stock upon the  conversion  of
any share of Class B Stock to Class A Stock, and vice versa.

                  (b) As used in this  Section 5.8,  (i) "Fully  Diluted  Basis"
shall  mean with  respect  to any shares of  Capital  Stock of the  Company  the
aggregate of (A) all of such shares which consist of Common Stock,  and (B) with
respect to any other shares which are not Common Stock,  the number of shares of
Common Stock into which such shares are convertible at the time of determination
of such Fully Diluted  Basis,  and (C) with respect to any Options,  the maximum
number of shares of Common Stock issuable at the time of such  determination  in
connection  with the exercise or conversion of any such Options;  (ii) "Options"
shall mean any rights,  options,  or warrants to purchase shares of Common Stock
from the Company, and securities of any type whatsoever that are, or may become,
convertible into,  exercisable,  exchangeable,  or carry rights to subscribe for
any Common Stock of the Company; and (iii)

                                                       -28-

<PAGE>



"Approved  Management  Incentive  Plan" shall mean any  incentive  stock plan or
other  form  of  incentive  compensation  approved  by the  Company's  Board  of
Directors and PSO in writing.


                                   ARTICLE VI

                        INDEMNIFICATION AND CONTRIBUTION

         6.1      Representations, Warranties and Covenants.

                  (a)  Notwithstanding  any  disclosures  made in the  Schedules
hereto,  the Company hereby agrees to indemnify,  exonerate and hold each Holder
and its  shareholders,  officers,  directors,  employees  and agents  (each,  an
"Indemnitee") free and harmless from and against any and all actions,  causes of
action, suits, claims,  losses,  liabilities,  damages and expenses,  including,
without limitation,  reasonable attorneys' fees and disbursements (collectively,
"Damages") arising out of or resulting from any failure by the Company to comply
with  any  of  its  covenants  or  any  breach  by  the  Company  of  any of its
representations  and  warranties  in  this  Agreement  or  any  other  agreement
contemplated  hereby,  except  where such  Damages  are caused  directly  by the
actions of the Indemnitee in violation of its obligations under such agreements.

                  (b) The  aggregate  liability  of the  Company for claims made
under Section 6.1(a) shall not exceed $3,500,000.  In addition to the foregoing,
the Company shall not be liable for any claim made under  Section  6.1(a) unless
such claim exceeds $75,000;  provided,  when the cumulative claims under Section
6.1(a)  exceed  $250,000,  the Company shall be liable for all such claims up to
the $3,500,000 general limitation.

                  (c)  The  parties   acknowledge   that  PSO  has  a  right  of
indemnification  against  certain of the Sellers under Article VIII of the Stock
Purchase Agreement (referred to therein as the "Indemnitors") that is similar to
PSO's right of  indemnification  against the Company  under  Section 6.1 of this
Agreement.  PSO agrees that its aggregate recovery of Damages under said Article
VIII of the Stock Purchase Agreement and Section 6.1 of this Agreement shall not
exceed  $3,500,000;  provided,  however,  the parties further agree that nothing
herein shall affect PSO's unconditional right to pursue indemnification  against
the Company under Section 6.1 of this Agreement,  the  Indemnitors  (jointly and
severally)  under  Article  VIII  of  the  Stock  Purchase  Agreement,   or  any
combination thereof, at PSO's sole discretion.

         6.2      Registration Rights.

                  (a)  Indemnification  by  the  Company.  In the  event  of any
registration under the Securities Act pursuant to Section 4.1 of any Registrable
Securities  covered by such  registration,  the Company  will,  and hereby does,
indemnify  and hold harmless  each Holder of  Registrable  Securities to be sold
under such  registration  statement,  and each Person,  if any, who controls any
such  Holder  within  the  meaning  of the  Securities  Act  (collectively,  the
"Indemnified  Parties"),  against any losses,  claims,  damages or  liabilities,
joint or several,  to which the Holder or controlling  person may become subject
under the Securities Act or otherwise,  insofar as such losses,  claims, damages
or liabilities (or actions or proceedings, whether commenced or

                                                       -29-

<PAGE>



threatened,  in  respect  thereof)  arise  out of or are based  upon any  untrue
statement or alleged  untrue  statement of any  material  fact  contained in any
registration  statement under which such  securities  were registered  under the
Securities  Act,  any  preliminary  prospectus,   final  prospectus  or  summary
prospectus contained therein or any document  incorporated therein by reference,
or any amendment or supplement  thereto,  or any omission or alleged omission to
state therein a material fact required to be stated therein or necessary to make
the  statements  therein not  misleading,  or arise out of any  violation by the
Company of any rule or regulation  promulgated under the Securities Act or state
securities  law  applicable  to the Company  and  relating to action or inaction
required  of the  Company  in  connection  with any such  registration,  and the
Company  will  reimburse  the  Indemnified  Parties  for any  legal or any other
expenses  reasonably  incurred  by  them in  connection  with  investigating  or
defending  any such loss,  claim,  liability,  action or  proceeding;  provided,
however,  that the Company shall not be liable to any  Indemnified  Party in any
such case to the extent that any such loss, claim, damage,  liability (or action
or proceeding in respect  thereof) or expense arises out of or is based upon any
untrue  statement or alleged  untrue  statement or omission or alleged  omission
made in such  registration  statement,  any such preliminary  prospectus,  final
prospectus, summary prospectus,  amendment or supplement in reliance upon and in
conformity with written information furnished to the Company by such Indemnified
Party.

                  (b)  Indemnification  by the Holders.  The Holders  will,  and
hereby  do,  indemnify  and hold  harmless  (in the same  manner and to the same
extent as set  forth in  Section  6.2(a))  the  Company,  each  director  of the
Company, each officer of the Company and each other person, if any, who controls
the  Company  within the  meaning of the  Securities  Act,  with  respect to any
statement  or alleged  statement  in or omission or alleged  omission  from such
registration statement, any preliminary prospectus,  final prospectus or summary
prospectus  contained therein, or any amendment or supplement  thereto,  if, and
only if, such statement or alleged statement or omission or alleged omission was
made in reliance upon and in conformity with information furnished in writing to
the Company directly by such person or entity specifically for use therein.

                  (c) Other  Indemnification.  Indemnification  similar  to that
specified in Sections 6.2(a) and (b) (with appropriate  modifications)  shall be
given by the Company and each Holder of Registrable  Securities  included in any
registration  statement  with  respect  to any  required  registration  or other
qualification  of securities under any Federal or state law or regulation of any
governmental authority, other than the Securities Act.

         6.3 Notices of Claims,  etc.  Promptly  after receipt by an Indemnified
Party of notice of the  commencement  of any action or  proceeding  involving  a
claim  referred to in Sections 6.1 or 6.2,  such  Indemnified  Party will,  if a
claim in  respect  thereof  is to be made  against a party  required  to provide
indemnification (an "Indemnifying  Party"), give written notice to the latter of
the  commencement  of such action or  proceeding,  provided,  however,  that the
failure of any  Indemnified  Party to give notice as provided  herein  shall not
relieve the  Indemnifying  Party of its  obligations  under Section 6.1 and 6.2,
except to the extent that the Indemnifying Party is actually  prejudiced by such
failure to give notice. In case any such action or proceeding is brought against
an Indemnified Party,  unless in such Indemnified  Party's reasonable judgment a
conflict of interest between such Indemnified and Indemnifying Parties may exist
in  respect  of  such  claim,  the  Indemnifying  Party  shall  be  entitled  to
participate in and to assume the

                                                       -30-

<PAGE>



defense thereof, jointly with any other Indemnifying Party similarly notified to
the  extent  that it may wish,  with  counsel  reasonably  satisfactory  to such
Indemnified  Party,  and  after  notice  from  the  Indemnifying  Party  to such
Indemnified  Party  of its  election  so to  assume  the  defense  thereof,  the
Indemnifying  Party shall not be liable to such Indemnified  Party for any legal
or other  expenses  subsequently  incurred by the latter in connection  with the
defense thereof other than reasonable  costs of  investigation.  No Indemnifying
Party  shall  consent  to entry of any  judgment  or enter  into any  settlement
without  the  consent of the  Indemnified  Party  which  does not  include as an
unconditional  term  thereof  the giving by the  claimant or  plaintiff  to such
Indemnified  Party of a release  from all  liability in respect to such claim or
litigation.

         6.4 Contribution.  If the indemnification  provided for in this Article
VI is unavailable or insufficient to hold harmless an Indemnified  Party,  other
than  because  such  indemnification  by its  terms is  inapplicable,  then each
Indemnifying  Party  shall  contribute  to the  amount  paid or  payable to such
Indemnified  Party as a result of the  losses,  claims,  damages or  liabilities
referred to in this Article VI an amount or additional  amount,  as the case may
be, in such  proportion as is  appropriate  to reflect the relative fault of the
Indemnifying  Party or parties on the one hand and the Indemnified  Party on the
other in  connection  with the  statements or omissions  which  resulted in such
losses,  claims,  demands or liabilities as well as any other relevant equitable
considerations.  The relative  fault shall be  determined by reference to, among
other things,  whether the untrue or alleged untrue statement of a material fact
or the  omission  or  alleged  omission  to state a  material  fact  relates  to
information supplied by the Indemnifying Party or parties on the one hand or the
Indemnified  Party on the other and the  parties'  relative  intent,  knowledge,
access to  information  and  opportunity  to  correct  or  prevent  such  untrue
statement or omission. The parties agree that it would not be just and equitable
if  contributions  pursuant  to this  Section  6.4 were  determined  by pro rata
allocation or any other method of allocation which did not take into account the
equitable considerations referred to above. The amount payable to an Indemnified
Party as a result of the losses,  claims,  damages or liabilities referred to in
the first  sentence of this  Section 6.4 shall be deemed to include any legal or
other expenses  reasonably incurred by such Indemnified Party in connection with
investigating  or  defending  any action or claim  which is the  subject of this
Article VI. No person guilty of fraudulent misrepresentation (within the meaning
of Section 11(f) of the Securities Act) shall be entitled to  contribution  from
any Person who was not guilty of such fraudulent misrepresentation.


                                   ARTICLE VII

                                  MISCELLANEOUS

         7.1 Specific Performance. The parties hereto acknowledge that there may
be no  adequate  remedy  at  law  if  any  party  fails  to  perform  any of its
obligations  hereunder and that each party may be irreparably harmed by any such
failure,  and accordingly agree that each party, in addition to any other remedy
to which it may be  entitled  at law or in equity,  shall be  entitled to compel
specific  performance of the obligations of any other party under this Agreement
in accordance with the terms and conditions of this Agreement.


                                                       -31-

<PAGE>



         7.2      Notices.

                  (a) All demands,  requests,  notices and other  communications
required or permitted to be given under this  Agreement  shall be in writing and
shall be  deemed  to have been duly  given if  delivered  personally  or sent by
United States first class mail,  postage  prepaid,  and to the parties hereto at
the  following  address  or at such  other  address  as any party  hereto  shall
hereafter specify by notice to the other party hereto:

                  if to the Company, addressed to:

                           SCIENTECH, Inc.
                           1690 International Way
                           Idaho Falls, Idaho  83402
                           Tel:     (208) 522-5500
                           Fax:     (208) 522-6771

                           with a copy to:

                           Moffatt, Thomas, Barrett, Rock & Fields
                           101 South Capitol Boulevard
                           Boise, Idaho  83701
                           Attention:  Paul Street
                           Tel:     208-345-2000
                           Fax:     208-385-5384

                  if to PSO, addressed to:

                           PUBLIC SERVICE COMPANY OF OKLAHOMA
                           c/o CSW Business Ventures
                           Two West Second Street
                           Tulsa, Oklahoma  74103
                           Attention: David Thomison
                           Telephone: (918) 594-2278
                           Facsimile: (918) 594-3841

                           with a copy to:

                           Doerner, Saunders, Daniel & Anderson
                           320 South Boston, Suite 500
                           Tulsa, Oklahoma  74103
                           Attention:  H. Wayne Cooper
                           Tel:     918-581-1211
                           Fax:     918-591-5360


                                                       -32-

<PAGE>



                  if to any other Holder, addressed to:

                           c/o SCIENTECH, Inc.
                           1690 International Way
                           Idaho Falls, Idaho  83402
                           Attention: Dr. L. J. Ybarrondo
                           Tel:     (208) 522-5500
                           Fax:     (208) 522-6771

                           with a copy to:

                           Egger Betts Austin Ahrens Treacy
                           2300 City Center Bellevue
                           500 108th Avenue N.E.
                           Bellevue, Washington  98004
                           Attention:  Ed Ahrens
                           Tel:     (206) 450-3300
                           Fax:     (206) 450-3310

                  (b) Notices shall be deemed given upon the earlier to occur of
(i)  receipt  by the party to whom  such  notice  is  directed;  (ii) if sent by
facsimile machine, on the day (other than a Saturday, Sunday or legal holiday in
the  jurisdiction  to which such notice is directed) such notice is sent if sent
(as evidenced by the facsimile  confirmed  receipt) prior to 4:00 p.m.  Mountain
Time and,  if sent  after 4:00 p.m.  Mountain  Time,  on the day  (other  than a
Saturday,  Sunday or legal holiday in the  jurisdiction  to which such notice is
directed)  after  which such  notice is sent;  (iii) on the first  business  day
(other than a Saturday,  Sunday or legal  holiday in the  jurisdiction  to which
such  notice  is  directed)  following  the day the same is  deposited  with the
commercial carrier if sent by commercial overnight delivery service; or (iv) the
fifth day (other than a Saturday, Sunday or legal holiday in the jurisdiction to
which such notice is directed)  following  deposit thereof with the U..S. Postal
Service as aforesaid.  Each party, by notice duly given in accordance  therewith
may specify a different address for the giving of any notice hereunder.

         7.3 Survival and Termination of Covenants, Agreements,  Representations
and Warranties. All covenants,  agreements,  representations and warranties made
herein or in any other  document  referred to herein or  delivered  to any party
pursuant  hereto  shall be  deemed to have  been  relied on by each such  party,
notwithstanding  any  investigation  made by such  party or on its  behalf.  All
representations  and warranties made herein or in any of the Related  Agreements
shall survive the  execution and delivery of this  Agreement and of the transfer
of the Purchased Securities,  the Option, or Option Securities;  provided, in no
event may PSO initiate an action for indemnification  arising out of a breach of
any  representation or warranty under Article III after the fifth anniversary of
the date of this Agreement.

         7.4  Amendments  and Waivers.  Except as otherwise  expressly  provided
herein, any term of this Agreement may be amended and the observance of any term
of this  Agreement may be waived (either  generally or in a particular  instance
and either  retroactively or prospectively) only with the written consent of the
parties hereto; provided, any amendment to Article IV may

                                                       -33-

<PAGE>



be made  pursuant  to a writing  signed by the Company and Holders of 60% of the
Registrable Securities. Any amendment or waiver effected in accordance with this
Section 7.4 shall be binding upon any assignee of such party.

         7.5 Entire  Agreement.  This Agreement and the Related  Agreements,  as
applicable, referred to herein constitute the whole and entire agreement between
the parties  pertaining to the subject matter  hereof,  and supersedes all prior
agreements or understandings between the parties with respect thereto.

         7.6 Governing Law. The validity,  construction  and enforcement of, and
the remedies under, this Agreement shall be governed in accordance with the laws
of Idaho, except any choice of law provision of Idaho law shall not apply if the
law of a state or jurisdiction other than Idaho would apply thereby.

         7.7  Jurisdiction  and Venue.  The parties to this Agreement agree that
jurisdiction  and venue of any action  brought to  enforce,  or to  construe  or
determine  the validity of, any term or  provision  contained in this  agreement
shall properly lie in the District  Court of Bonneville  County,  Idaho,  or the
United States District Court for the District of Idaho, or the District Court of
Tulsa County,  Oklahoma,  or the United States  District  Court for the Northern
District  of  Oklahoma.  Such  jurisdiction  and  venue are  merely  permissive;
jurisdiction   and  venue  shall  also  continue  to  lie  in  any  court  where
jurisdiction and venue would otherwise be proper. The parties further agree that
the mailing by certified mail, return receipt requested,  or the delivery by any
recognized expedited delivery service, of any process required by any such court
shall,  when received,  constitute  valid and lawful service of process  against
them, without the necessity for service by any other means otherwise provided by
statute or rule of court.

         7.8 Successors and Assigns.  The terms and conditions of this Agreement
shall inure to the benefit of and be binding  upon the parties  hereto and their
respective  successors  and permitted  assigns.  Registration  rights under this
Agreement are assignable to any transferee of Registrable  Securities.  No party
may assign its  obligations  hereunder  without the prior written consent of the
other parties; provided,  notwithstanding any provision of this Agreement or any
Related  Agreement to the  contrary,  without  prior notice to or consent of the
Company,  PSO may assign all of its rights and obligations under this Agreement,
or any  or  all of its  Purchased  Securities,  Option,  and  Option  Securities
purchased under the Stock Purchase Agreement,  to any Affiliate under the direct
or  indirect  control  of PSO's  parent  corporation,  Central  and  South  West
Corporation.

         7.9      Headings.  The headings contained in this Agreement are for 
reference purposes only and shall not affect the meaning or interpretation of 
this Agreement.

         7.10  Attorneys'  Fees.  If any  action is brought  to  enforce,  or to
construe or determine the validity of, any term or provision of this  Agreement,
the prevailing party shall be entitled to reasonable attorneys' fees, costs, and
disbursements  in  addition  to any  other  relief  to which  such  party may be
entitled.

         7.11     Severability.  If any provision of this Agreement is held to 
be unenforceable under applicable law, such provision shall be excluded from 
this Agreement and the balance of

                                                       -34-

<PAGE>



the Agreement  shall be  interpreted  as if such  provision were so excluded and
shall be enforceable in accordance with its terms.

         7.12  Pronouns  and  Plurals.  Whenever  the context may  require,  any
pronoun  used in this  Agreement  shall  include  the  corresponding  masculine,
feminine or neuter  forms,  and the singular  form of nouns,  pronouns and verbs
shall include the plural and vice versa.

         7.13     Further Action.  The parties to this Agreement shall execute 
and deliver all documents, provide all information and take or refrain from 
taking action as may be necessary or appropriate to achieve the purposes of 
this Agreement.

         7.14  Waiver.  No  failure  by any  party to  insist  upon  the  strict
performance of any covenant,  duty,  agreement or condition of this Agreement or
to  exercise  any  right  or  remedy  consequent  upon a  breach  thereof  shall
constitute waiver of any such breach or any other covenant,  duty,  agreement or
condition.

         7.15 Counterparts. This Agreement may be executed in counterparts, each
of which shall be deemed an original,  but all of which shall constitute one and
the same instrument.  Any signature delivered by facsimile transmission shall be
deemed a valid and binding signature for all purposes hereof.

         7.16 Construction.  All parties hereto having participated  actively in
the  negotiation  and  drafting of this  Agreement,  and each party  having been
represented  by  counsel,  the terms of this  Agreement  shall not be  construed
against,  nor more favorably to, any party,  regardless of their  responsibility
for its preparation.

         7.17  Expenses.  The  Company  on the one  hand,  and each of the other
parties hereto on the other hand, agree to pay their separate costs and expenses
(such as travel,  photocopy  and  telephone  expenses and including the fees and
expenses of counsel) in connection with the  documentation  of the  transactions
contemplated  by this  Agreement,  and  shall  not be  liable  for  the  other's
expenses.

         7.18  Escrow.  The  effectiveness  of this  Agreement is subject to and
contingent upon approval,  as provided therein, of the Stock Purchase Agreement,
and all transactions  contemplated  thereby,  by the Commission under the Public
Utility  Holding  Company Act, of 1935, as amended.  Pending such approval,  the
parties agree to execute,  deliver,  and deposit this  Agreement with the Escrow
Agent (as such term is defined in the Stock Purchase  Agreement) pursuant to the
terms of the Escrow Agreement.

                  (a)  In  the  event   the   Commission   disapproves   of  the
transactions  contemplated by the Stock Purchase  Agreement,  or in the event no
approval,  as provided therein, or denial is received from the Commission within
75 days from the date  hereof (or such later date as may be agreed to in writing
by PSO and Dr. L. J.  Ybarrondo and  communicated  to the Escrow Agent) (i) this
Agreement shall be rescinded,  and (ii) no party hereto shall have any liability
to any other party whatsoever.


                                                       -35-

<PAGE>



                  (b) In the event of Commission approval,  as provided therein,
of the Stock Purchase Agreement, and all transactions contemplated thereby, this
Agreement  shall be delivered  by the Escrow  Agreement to all parties and shall
continue in full force and effect.

                  [Remainder of Page Intentionally Left Blank]



                                                       -36-

<PAGE>



         IN WITNESS WHEREOF,  the parties have executed this Agreement as of the
date first written above.

                                                     "Company"

                                                     SCIENTECH, Inc.


                                       By:
                                      Name:
                                     Title:


                                      "Holders"

                                      PUBLIC SERVICE COMPANY OF OKLAHOMA


                                       By:
                                      Name:
                                     Title:

                                      YBARRONDO FAMILY TRUST C-2

                                       By:
                                       Dr. L. J. Ybarrondo, Trustee



                                       DR. L. J. YBARRONDO




                                                       -37-

<PAGE>



                                       KR ACQUISITION CORP.


                                       By:
                                       Bruce Robinson, Chairman




                                       ROGER J. MATTSON

                                                       -38-



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