BARRINGER LABORATORIES INC
8-K, 2000-03-03
TESTING LABORATORIES
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D. C. 20549

                            -------------------------

                                    FORM 8-K

                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934

       Date of Report (Date of earliest event reported): October 18, 1999


                            -------------------------

                          BARRINGER LABORATORIES, INC.
              ----------------------------------------------------
             (Exact name of registrant as specified in its charter)

                                    DELAWARE
                  --------------------------------------------
                 (State or other jurisdiction of incorporation)

             1-8241                                        84-0951626
     ----------------------                     -------------------------------
    (Commission File Number)                   (IRS Employer Identification No.)

         15000 West 6th Avenue, Suite 300, Golden   CO              80401-5047
         ---------------------------------------------              ----------
          (Address of principal executive offices)                  (Zip Code)

     Registrant's telephone number, including area code:   303/277-1687

                                 Not Applicable
           -----------------------------------------------------------
          (Former name or former address, if changed since last report)











                                        1

<PAGE>


ITEM 5. OTHER EVENTS

     On or about October 18, 1999, the Registrant,  Barringer Laboratories, Inc.
("Barringer"),  has approved the sale and issuance of up to 8,333,333  shares of
its Common Stock, $.01 par value, at $.06 per share which will provide an equity
infusion to the company in amount of up to  $500,000.00.  Proceeds from the sale
of Common Stock is needed by Barringer for its immediate  and  anticipated  near
term cash flow needs. The stock will be sold to certain of Barringer's  existing
shareholders.

     Barringer's  Certificate  of  Incorporation,  as  amended,  authorizes  the
issuance of 10,000,000  shares of Common Stock and 1,000,000  share of Preferred
Stock,  $2.00 par value. There are 6,830,958 shares of Common Stock outstanding.
Therefore,  Barringer  does not have a sufficient  number of unissued  shares of
Common Stock authorized in its Certificate of  Incorporation  needed to sell the
entire 8,333,333 shares, as approved. Accordingly, Barringer's shareholders will
be  asked  at  the  next  shareholders'  meeting  to  approve  an  amendment  to
Barringer's  Certificate of  Incorporation to increase the number of authorized,
but unissued, shares of Common Stock. Pending such shareholder action, Barringer
has  been  authorized  to  raise  up to  $500,000.00  through  the  issuance  of
convertible  notes  to  those  persons  who  subscribe  to  purchase  shares  of
Barringer's  common stock. The form of the Convertible  Note,  together with the
Security  Agreement  and  Registration  Rights  Agreement  which are  referenced
therein,   are  attached  as  Exhibit  10.4,  Exhibit  10.5  and  Exhibit  10.6,
respectively. Any and all discussion in this report of the Convertible Note, the
Security  Agreement  and the  Registration  Rights  Agreement  is  qualified  by
reference  to Exhibit  10.4,  Exhibit  10.5 and Exhibit  10.6.  Barringer  began
issuing  Convertible  Notes during the week of October 18, 1999,  in  connection
with its plans to cause an equity  infusion  in an amount of up to  $500,000.00.
These securities have been issued pursuant to exemptions from registration under
the  Securities  Act of  1933  as well as  exemptions  from  registration  under
applicable state securities law.

     Each  Convertible  Note issued will give  Barringer the right,  at its sole
option,  to convert  the  balance  thereof  to shares of its  Common  Stock at a
conversion  price of $.06 per share of Common  Stock.  Barringer  has  committed
itself under each Convertible Note to take all reasonable action to increase the
authorized and unissued  shares of Common Stock so that it can convert the notes
to shares of Common Stock as soon as reasonably  practicable.  Each  Convertible
Note has a maturity date of one year and will require the payment of interest at
the rate of ten  percent  (10%) per annum on the balance of the note only in the
event that the note is not converted to shares of Common Stock.  Pursuant to the
terms of the Security Agreement, the obligations of Barringer arising under each
Convertible  Note will be secured by a pledge of essentially  all of Barringer's
assets.

     Barringer  contemplates having to raise at least an additional  $200,000.00
in the near term for its anticipated cash flow needs. Barringer expects to raise
this  amount  through  the sale of Common  Stock at $.06 per share or by issuing
convertible  notes in such amounts with terms  similar to those  represented  by
Exhibit 10.4.


                                        2

<PAGE>


ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

     The following exhibits are filed herewith:

Name of Exhibit                                      Exhibit No.
- ---------------                                      -----------

Convertible Note                                         10.4
Security Agreement                                       10.5
Registration Rights Agreement                            10.6




                                    SIGNATURE

     Pursuant to the  requirements  of the  Securities  Exchange Act of 1934, as
amended,  the  Registrant has duly caused this report to be signed on its behalf
by the undersigned hereunto duly authorized.

     Dated:  March 2, 2000



                                           BARRINGER LABORATORIES, INC.



                                           By: /s/ J. Graham Russell
                                              ----------------------------------
                                              J. Graham Russell, President
















                                        3


                                                                       EXHIBIT B



THESE  SECURITIES HAVE NOT BEEN  REGISTERED  UNDER THE SECURITIES ACT OF 1933 OR
ANY STATE  SECURITIES  ACTS OR LAWS,  AND HAVE BEEN  ISSUED AND SOLD IN RELIANCE
UPON  EXEMPTIONS  FROM THE  REGISTRATION  REQUIREMENTS  OF SUCH  ACTS AND  LAWS,
INCLUDING  BUT NOT LIMITED TO THE  EXEMPTION  CONTAINED  IN SECTION  4(2) OF THE
SECURITIES ACT OF 1933. THESE SECURITIES MAY NOT BE SOLD OR TRANSFERRED UNLESS A
REGISTRATION  STATEMENT  HAS BECOME AND IS THEN  EFFECTIVE  WITH RESPECT TO SUCH
SECURITIES  OR BARRINGER  LABORATORIES,  INC. HAS RECEIVED AN OPINION OF COUNSEL
REASONABLY  SATISFACTORY TO IT, TO THE EFFECT THAT THE PROPOSED SALE OR TRANSFER
IS EXEMPT FROM  REGISTRATION  UNDER THE SECURITIES ACT OF 1933, AS AMENDED,  AND
ALL APPLICABLE STATE SECURITIES ACTS AND LAWS.


                                CONVERTIBLE NOTE
                                       OF
                          BARRINGER LABORATORIES, INC.

$____________________                                           October __, 1999


     BARRINGER LABORATORIES,  INC., a Delaware corporation (the "Company"),  for
value  received,  hereby promises to pay to the order of  ________________  (the
"Investor") or his permitted  assigns (in each case, the "Holder") at 15000 West
6th   Avenue,   Suite   300,   Golden,   Colorado   80401-5047,   the   sum   of
$___________________.  The  Company  shall  only  pay  interest  (to the  extent
permitted  by law) on any overdue  principal on this Note at the rate of 10% per
annum,  from the due date of such  principal  until  payment in full  thereof is
made.  The  principal  amount  then  outstanding  of this Note  shall be due and
payable in full on the 365th day from the date  hereof  (the  "Maturity  Date").
This Note is originally being issued pursuant to a Subscription Agreement, dated
October ___, 1999 (the "Original Issue Date"), between the Company, the Investor
and,   perhaps  others   (collectively,   the   "Investors")   (each  Investor's
Subscription  Agreement are collectively  referenced herein as the "Subscription
Agreement").  All Notes issued under the Subscription  Agreement are referred to
herein as the "Notes."

     The following is a statement of the rights of the Holder and the conditions
to which this Note is subject, and to which the Holder hereof, by the acceptance
of this Note, agrees:

<PAGE>




     1. Security.  The obligations  evidenced by, arising under or in connection
with,  this Note are  secured  by a security  interest,  created  pursuant  to a
certain  Security  Agreement,  dated  as  of  the  date  hereof  (the  "Security
Agreement"),  among the Company and the Investors, in the Collateral (as defined
in the Security Agreement).

     2.  Financing  Statements.  The  Company  shall  execute and deliver to the
Investor (i) the Security  Agreement;  (ii) Uniform  Commercial  Code  Financing
Statements (Form UCC-1) or appropriate  local equivalent in appropriate form for
filing under the Uniform Commercial Code or appropriate local equivalent of each
jurisdiction as may be necessary to perfect the security interests  purported to
be created by the Security  Agreement;  and (iii) all other documents  necessary
or, in the  reasonable  opinion  of the  Investor,  desirable,  to  perfect  the
security  interests  in the  Collateral  purported to be created by the Security
Agreement.

     3.  Amendments.  This Note may not be  amended,  modified  or waived in any
respect unless set forth in writing and signed by the Company and the Holder.

     4.  Notices.  So long as this Note remains  outstanding,  the Company shall
maintain an office or agency (which shall  initially be the  principal  place of
business of the Company  located at 15000 West 6th  Avenue,  Suite 300,  Golden,
Colorado  80401-5047)  where notices,  presentations  and demands to or upon the
Company  in respect  of this Note may be given.  All  notices to be given by the
Company to the Holder in  respect of this Note shall be  delivered  or mailed to
the  address of the Holder set forth on the records of the Company or such other
address as shall be designated in writing by the Holder to the Company.

     5. Events of  Default.  (a) The  following  shall  constitute  an "Event of
Default" under this Note:

               (i)  Default  shall be made in any  payment  of  principal  of or
          interest on this Note when the same shall become due and payable,  and
          such  principal or interest  shall remain unpaid for 30 days after the
          date upon which such payment was due;

               (ii) any  representation or warranty made by the Company under or
          in connection with the Subscription Agreement, the Security Agreement,
          the  Registration  Rights  Agreement,  dated  as of the  date  hereof,
          between  the  Company  and the  Investors  (the  "Registration  Rights
          Agreement,"  and  together  with the  Subscription  Agreement  and the
          Security Agreement, the "Transaction Documents"), or any certification
          or other  instrument  furnished  in  connection  with any  Transaction
          Document or the transactions contemplated thereby, shall prove to have
          been false or misleading in any material respect;

               (iii) default shall be made in the due  observance or performance
          of any covenant or agreement (other than as contemplated by clause (i)
          above)  to be  observed  or  performed  by the  Company  or any of its
          subsidiaries  for the  benefit  of the  Holder  under this Note or any
          Transaction  Document  and  such  default  shall  remain  uncured  and
          unwaived for a period of 30 days after written notice thereof is given
          to the Company by the Holder,  unless the Holder  determines  that the
          Company has  diligently  instituted  and is  continuing  diligently to
          pursue corrective action sufficient to cure such default;

                                       2
<PAGE>


               (iv) The Company shall (A) voluntarily commence any proceeding or
          file any petition  seeking  relief under Title 11 of the United States
          Code or any other Federal or state  bankruptcy,  insolvency or similar
          law,  (B) consent to the  institution  of any such  proceeding  or the
          filing  of  any  such  petition,  (C)  apply  for  or  consent  to the
          appointment of a receiver, trustee, custodian, sequestrator or similar
          official  for  the  Company  or  such  Subsidiary  or  for  all  or  a
          substantial  part of its properties,  (D) file an answer admitting the
          material  allegations  of a  petition  filed  against  it in any  such
          proceeding,   (E)  make  a  general  assignment  for  the  benefit  of
          creditors,  or (F) admit in writing its  inability to pay its debts as
          they become due;

               (v)  an   involuntary   proceeding   shall  be  commenced  or  an
          involuntary   petition   shall  be  filed  in  a  court  of  competent
          jurisdiction  seeking (A) relief in respect of the Company,  or of all
          or a substantial part of the properties thereof, under Title 11 of the
          United  States  Code  or  any  other  Federal  or  state   bankruptcy,
          insolvency or similar law, (B) the appointment of a receiver, trustee,
          custodian,  sequestrator or similar  official for the Company or for a
          substantial part of the properties  thereof,  or (C) the winding up or
          liquidation  of the  Company;  and an order  or  decree  approving  or
          ordering  any of the  foregoing  shall  be  issued  by a court  having
          jurisdiction and continue unstayed and in effect for 60 days; or

               (vi) an  unappealed  final  judgment  for the payment of money in
          excess of $250,000  shall be  rendered  against the Company or and the
          same  shall  remain  undischarged  or  unbonded  for  a  period  of 60
          consecutive days during which execution shall be effectively stayed.

          (b) In case of any Event of Default and at any time thereafter  during
the continuance of such Event of Default, the holders of a majority in principal
amount of the Notes then  outstanding  may,  by written  notice to the  Company,
declare  the  Notes  to be due and  payable  in full  both as to  principal  and
interest, together with a prepayment premium equal to 1% of the principal amount
of the Note as of the date thereof;  provided,  however,  that no notice need be
given to the  Company  if  acceleration  is based  upon the  Events  of  Default
described  in clauses  (v) or (vi) of  paragraph  (a) above,  in either of which
cases this Note shall automatically become due and payable without any action on
the part of the holders.

          (c) In case an Event of Default shall have occurred and be continuing,
the Holder  may  proceed to protect  and  enforce  its rights  either by suit in
equity or by action at law, whether for the specific performance of any covenant
or agreement  contained in the  Transaction  Documents or this Note or in aid of
the exercise of any power granted in the Transaction  Documents or in this Note,
or proceed to enforce  the payment of this Note or to enforce any other legal or
equitable right of the Holder.  No remedy conferred  hereunder is intended to be
exclusive of any other remedy and each such remedy shall be cumulative and shall
be in addition to every other remedy  given  hereunder or currently or hereafter
existing at law or in equity or by statute or otherwise.


     6.  Conversion.

          6.1 Election by Company.  The Company has the right, at any time until
the Maturity  Date,  to convert this Note in accordance  with the  provisions of
Subsection 6.2 hereof,  in whole or in part,  into fully paid and  nonassessable
shares of the Common  Stock,  par value  [$0.01] per share,  of the Company (the
"Common  Stock").  The number of shares of Common Stock into which this Note may


                                       3
<PAGE>


be  converted  at any given  time shall be  determined  by  dividing  the unpaid
principal amount by the Conversion  Price. As used herein,  the term "Conversion
Price" shall mean a price of $0.06 per share, subject to adjustment as set forth
in Section 8.

          6.2  Conversion  Procedure.  The Company  anticipates  that will be in
position to take all action as is  necessary  to  increase  the  authorized  but
unissued  shares of its common  stock  during the first  quarter of fiscal  year
2000, if not sooner.  Therefore,  if not sooner than or during the first quarter
of fiscal  year 2000,  the Company  shall,  as soon as  reasonably  practicable,
convert this Note into shares of Common Stock and shall issue and deliver to the
Holder a certificate  or  certificates  for the number of Shares so converted to
which the Holder is entitled in accordance  with the terms and conditions of the
Subscription  Agreement.  Such  conversion  shall be  deemed  to have  been made
immediately prior to the close of business on the date that the Company issues a
certificate or certificates  representing  such Shares and the person or persons
entitled to receive the Shares  shall be treated for all  purposes as the record
holder or  holders of such  Shares as of such  date.  On such date that the full
outstanding  principal  balance  of this Note is  converted  to Common  Stock as
provided herein, this Note shall be deemed to be paid in full. On such date, the
Holder shall take reasonable action to surrender this Note to the Company and to
reflect that it has been paid in full.

          6.3 No Fractional  Shares.  No fractional shares of Common Stock shall
be issued  upon  conversion  of this Note.  In lieu of the  Company  issuing any
fractional  shares to the Holder upon the  conversion of this Note,  the Company
shall pay to the Holder in immediately available funds the amount of outstanding
principal  that is not so converted.  Upon  conversion in whole of this Note and
the proper issuance of a certificate or certificates representing the Shares and
payment in lieu of fractional shares, the Company shall be forever released from
all its obligations and liabilities under this Note.

     7. Reservation of Common Stock. If not sooner, than during as or reasonably
practicable  after the first quarter of fiscal year 2000, the Company shall take
all action as is  necessary to increase  the amount of  authorized  but unissued
shares of Common Stock. Thereafter,  the Company shall at all times duly reserve
a sufficient  number of shares of  authorized  Common  Stock for  issuance  upon
conversion of all Notes.  Upon  issuance,  sale and delivery of a certificate or
certificates  representing  the Shares,  such Shares shall be validly issued and
outstanding,  fully paid and nonassessable with no personal liability  attaching
to the ownership thereof,  and shall not be subject to preemptive or any similar
rights of any person or entity.

     8. Adjustment of Conversion  Price.  (a) If, at any time after the Original
Issue Date, the number of outstanding shares of Common Stock is (i) increased by
a stock  dividend  payable  in  shares of Common  Stock or by a  subdivision  or
split-up  of shares of Common  Stock,  or (ii)  decreased  by a  combination  or
reverse split of shares of Common Stock,  then,  following the record date fixed
for the  determination  of  holders of Common  Stock  entitled  to  receive  the
benefits of such stock dividend,  subdivision,  split-up, combination or reverse
split,  the  Conversion  Price shall be  adjusted  to a new amount  equal to the
product of (A) the  Conversion  Price in effect on such  record date and (B) the
quotient  obtained  by  dividing  (x) the  number  of  shares  of  Common  Stock
outstanding on such record date (without  giving effect to the event referred to
in the foregoing clause (i) or (ii)) by (y) the number of shares of Common Stock
which  would be  outstanding  immediately  after  the event  referred  to in the
foregoing clause (i) or (ii), if such event had occurred  immediately  following
such record date.


                                       4
<PAGE>


          (b) If, at any time after the Original  Issue Date,  the Company shall
issue or be deemed to have issued (as  provided  below)  shares of Common  Stock
without  consideration or for a consideration per share less than the Conversion
Price in effect immediately prior to such issuance or deemed issuance, then such
Conversion  Price shall be lowered to a price equal to the quotient  obtained by
dividing  (i) an amount equal to the sum of (A) the product of (x) the number of
shares of Common Stock outstanding  immediately prior to such issuance or deemed
issuance  and  (y) the  then  existing  Conversion  Price,  and  (B)  the  total
consideration  received or deemed  received by the Company upon such issuance or
deemed issuance,  by (ii) the total number of shares of Common Stock outstanding
immediately  after such  issuance or deemed  issuance.  For the  purposes of any
adjustment of the  Conversion  Price pursuant to this  paragraph,  the following
provisions shall be applicable:

               (i) In the case of the  issuance  of Common  Stock for cash,  the
          consideration  shall be deemed to be the amount of cash paid  therefor
          without  deducting  therefrom  any  discounts,  commissions  or  other
          expenses allowed, paid or incurred by the Company for any underwriting
          or otherwise in connection with such issuance.

               (ii)  In  the  case  of  the  issuance  of  Common  Stock  for no
          consideration, the consideration shall be deemed to be $.01 per share.

               (iii)  In  the  case  of  the  issuance  of  Common  Stock  for a
          consideration  in whole or in part other than cash, the  consideration
          other than cash shall be deemed to be the fair market value thereof as
          determined  in good faith by the Board of Directors,  irrespective  of
          any accounting treatment.

               (iv) In the case of the issuance of options to purchase or rights
          to subscribe for Common Stock,  securities by their terms  convertible
          into or  exchangeable  for Common  Stock,  or options to  purchase  or
          rights to subscribe for such convertible or exchangeable securities:

                    (A) The shares of Common Stock  deliverable upon exercise of
               such options to purchase or rights to subscribe  for Common Stock
               shall be deemed to have been  issued at the time such  options or
               rights  were  issued  and  for  a  consideration   equal  to  the
               consideration  (determined in the manner  provided in clauses (i)
               through  (iii) above),  if any,  received by the Company upon the
               issuance  of such  options or rights  plus the  minimum  purchase
               price  provided  in such  options or rights for the Common  Stock
               covered thereby.

                    (B) The shares of Common Stock  deliverable  upon conversion
               of or in  exchange  for  any  such  convertible  or  exchangeable
               securities  or upon the exercise of options to purchase or rights
               to subscribe for such convertible or exchangeable  securities and
               subsequent  conversions  or exchanges  thereof shall be deemed to
               have been issued at the time such  securities were issued or such
               options or rights  were issued and for a  consideration  equal to
               the consideration received by the Company for any such securities
               and related  options or rights  (excluding  any cash  received on
               account  of accrued  interest  or  accrued  dividends),  plus the
               additional  consideration,  if any, to be received by the Company
               upon  the  conversion  or  exchange  of  such  securities  or the
               exercise of any related options or rights (the  consideration  in
               each case to be determined in the manner  provided in the clauses
               (i) through (iii) above).


                                        5


<PAGE>


                    (C) Upon any  change  in the  exercise  price of  shares  of
               Common  Stock  deliverable  upon  exercise of any such options or
               rights or  conversion  of or  exchange  for such  convertible  or
               exchangeable  securities,  other than a change resulting from the
               antidilution  provisions  thereof,  the Conversion Price shall be
               readjusted  to such  Conversion  Price as would have obtained had
               the adjustment made upon the issuance of such options,  rights or
               securities not converted  prior to such change been made upon the
               basis of such change.

                    (D) Upon  expiration  of any such  options  or  rights,  the
               termination  of any such  rights to convert or  exchange,  or the
               expiration of any options or rights  related to such  convertible
               or  exchangeable  securities,   the  Conversion  Price  shall  be
               readjusted  to such  Conversion  Price as would have obtained had
               such options, rights,  securities or options or rights related to
               such securities not been issued.

                    (E) No further  adjustments of the Conversion Price shall be
               made upon the actual  issuance  of such  Common  Stock or of such
               convertible  or  exchangeable  securities  upon  exercise of such
               options or rights,  or upon the actual  issuance  of such  Common
               Stock  upon  conversion  or  exchange  of  such   convertible  or
               exchangeable securities.

          (c) All  calculations  under this Section shall be made to the nearest
cent ($.01).

          (d) Whenever the Conversion Price shall be adjusted as provided above,
the Company shall deliver to the Holder a statement,  signed by its President or
Chief Financial  Officer,  showing in detail the facts requiring such adjustment
and the Conversion Price that shall be in effect after the adjustment.

     9. Adjustment of Shares. Following any Corporate Reorganization (as defined
below) after the Original Issue Date,  this Note shall be  convertible  into the
kind and number of shares of capital stock or other securities or property which
the Holder would have owned or have been entitled to receive with respect to the
Shares  had  this  Note  been  converted  immediately  prior  to such  Corporate
Reorganization.  The foregoing  provision  shall  similarly  apply to successive
Corporate  Reorganizations.  "Corporate  Reorganization"  means (i) any  capital
reorganization or  reclassification  of the capital stock of the Company,  other
than (A) a change in par value or from par  value to no par  value,  or (B) as a
result of a stock dividend or subdivision,  split-up,  or combination of shares,
and (ii) any  merger  or  consolidation  of the  Company  pursuant  to which the
stockholders of the Company are to receive cash, securities, or other properties
in exchange for the shares of capital stock of the Company then held by them.

     10.  Extension of Maturity.  Should the principal of or premium or interest
on this Note become due and payable on other than a business  day,  the maturity
thereof shall be extended to the next succeeding business day, and, with respect
to the interest on the principal,  interest shall be payable thereon at the rate
per annum herein specified during such extension.  The term "business day" shall
mean any day that is not a  Saturday,  Sunday or legal  holiday  in the State of
Delaware.

     11. Costs and Expenses.  The Company agrees to pay all reasonable costs and
expenses,  including  reasonable  attorneys'  fees,  incurred  by the  Holder in
collecting or enforcing this Note.

                                       6
<PAGE>


     12. No  Waivers.  No delay by the Holder in  exercising  any power or right
hereunder shall operate as a waiver of any power or right,  nor shall any single
or partial  exercise of any power or right  preclude  other or further  exercise
thereof, or the exercise of any other power or right hereunder or otherwise.

     13.  Transfer of Note.  Subject to the  restrictions  on transfer set forth
herein and in the Subscription Agreement, this Note and all rights hereunder are
transferable  in whole or in part.  Any transfer shall be effected by the Holder
in person or by duly  authorized  attorney by surrendering  this Note,  properly
endorsed,  at the office of the Company.  Each taker and holder of this Note, by
taking or holding the same,  consents  and agrees that this Note shall be deemed
negotiable, and, when appropriately endorsed the holder hereof may be treated by
the Company and all other persons  dealing with this Note as the absolute  owner
hereof  for any  purposes  and as the person  entitled  to  exercise  the rights
represented by this Note, or to the transfer hereof on the books of the Company,
any notice to the  contrary  notwithstanding;  but until such  transfer  on such
books,  the Company may treat the  registered  holder hereof as the owner hereof
for all purposes, any notice to the contrary notwithstanding.

     14.  Governing  Law.  This Note  shall be  governed  by and  construed  and
enforced  in  accordance  with  the  laws of the  State  of  Colorado.  Whenever
possible,  each provision of this Note shall be interpreted in such manner as to
be effective and valid under  applicable  law, but if any provision of this Note
shall be prohibited by or invalid under  applicable law, such provision shall be
ineffective  only to the  extent  of such  prohibition  or  invalidity,  without
invalidating the remainder of such provision or the remaining provisions of this
Note.

     15. Notices. All notices,  demands or other communications  hereunder shall
be in writing and shall be deemed  given when  delivered  personally,  mailed by
certified mail, return receipt requested,  sent by overnight courier service, or
telecopied  (transmission  confirmed  and a  copy  sent  by  personal  delivery,
certified mail or overnight courier service) to the following  addresses or such
other address as may be designated in writing by either party in accordance with
the terms of this provision:

          Holder:
                         ------------------------
                         ------------------------
                         ------------------------
                         ------------------------
                         Telecopier:
                                    -------------




          The Company:   Barringer Laboratories, Inc.
                         15000 West 6th Avenue
                         Suite 300
                         Golden, Colorado 80401-5047
                         Telecopier: (303) 277-1689




                                       7

<PAGE>


     IN WITNESS  WHEREOF,  the Company has caused  this  Convertible  Note to be
issued as of the date first set forth hereinabove.

                                             BARRINGER LABORATORIES, INC.



                                             By:
                                                --------------------------------
                                                Name:
                                                Title:


















                                       8

                               SECURITY AGREEMENT

     This  Security  Agreement  ("Agreement")  is entered  into this ____ day of
October,  1999,  by  and  between  Barringer  Laboratories,   Inc.,  a  Delaware
corporation, ("Barringer"), and _________________________ ( "Secured Party").

                                   RECITALS:

     A.  Pursuant  to the  Subscription  Agreement  for  Shares of Common  Stock
between  Barringer  and  Secured  Party dated  October  __, 1999  ("Subscription
Agreement"),  Secured Party has made payment to Barringer in  consideration  for
the purchase of ______________________  shares of Barringer's common stock, $.01
par value ("Shares").

     B. Until such time as  Barringer  takes all  necessary  action to issue the
Shares,  payment  for the  Shares  is  evidenced  by a  Convertible  Note in the
principal  amount of  $___________________________("Note")  dated as of the same
date hereof.

     C. Until such time as  Barringer  takes all  necessary  action to issue the
Shares, Barringer has agreed to secure the payment of the Note by the grant of a
security interest in Barringer's assets under the terms of this Agreement.

     NOW  THEREFORE,  for good and  valuable  consideration,  the  adequacy  and
receipt of which are hereby acknowledged, the parties agree as follows:

     1. Grant of Security  Interest.  (a) As collateral  security for the prompt
payment  in full  when due of the  Secured  Obligations  (hereinafter  defined),
Barringer  hereby  grants,  conveys,  and  assigns to  Secured  Party a security
interest in and to the Collateral  (hereinafter  defined). The security interest
in the Collateral is granted to secure and enforce the following  (collectively,
the "Secured Obligations"):

          (i) Payment of the Note in accordance with its terms; and

          (ii)  Performance of any and all of Barringer's  other  obligations to
Secured  Party  under:  (A) the Note,  (B) this  Agreement,  and (C) any and all
renewals,  extensions for any period, rearrangements or refinancings of the Note
or of any other obligations under the Note or this Agreement.

     (b) A copy of this Agreement may be used as a financing statement.

     2. Property. The following property (collectively, "Collateral") is subject
to the security interest herein granted:

     (a) All  Receivables  of  Barringer  now  owned or  hereafter  acquired  or
arising,  together with all customer lists,  original books and records,  ledger
and account cards, computer tapes, discs, printouts and records,  whether now in
existence of hereafter created.  "Receivables"  means all rights of Barringer to
the payment of money,  whether or not earned and howsoever evidenced or arising,



<PAGE>


including  (without  limitation)  all  present and future  "Accounts",  accounts
receivable,  "Chattel  Paper",  "Instruments,"  and rights to payment  which are
"General Intangibles" (as those terms are used in the Uniform Commercial Code as
enacted in the State of Colorado ("Commercial Code")), all security therefor and
any goods represented by any of the foregoing  including returned or repossessed
goods;

     (b) All Inventory of Barringer, whether now owned or hereafter acquired and
wherever located. "Inventory" includes all Goods (as defined in Article 9 of the
Commercial  Code) intended for sale or lease or to be furnished  under contracts
of service,  all raw materials and work in process therefor,  all finished goods
thereof,  all  materials and supplies of every nature used or usable or consumed
or  consumable  in  connection   with  the   manufacture,   packing,   shipping,
advertising,  selling,  leasing or furnishing of such Goods, and all accessories
thereto and all documents of title therefor evidencing the same:

     (c) All Equipment of Barringer, whether now owned or hereafter acquired and
wherever  located.  "Equipment"  includes  all of  Barringer's  Goods other than
Inventory,  all  replacements  and  substitutions  therefor  and all  accessions
thereto, and specifically includes,  without limitation,  all present and future
machinery, equipment, vehicles,  manufacturing equipment, shop equipment, office
and record keeping equipment,  furniture,  fixtures,  parts, tools and all other
Goods (except  Inventory) used or acquired for use by Barringer for any business
or enterprise;

     (d) All General  Intangibles and Deposit  Accounts (as defined in Article 9
of the Commercial Code) of Barringer,  whether now owned or hereafter  acquired,
including  (without  limitation)  all  present and future  domestic  and foreign
patents, patent applications,  trademarks,  trademark applications,  copyrights,
trade names, trade secrets,  patent and trademark licenses (whether Barringer is
licensor  or  licensee),  shop  drawings,   engineering  drawings,   blueprints,
specifications,  parts  lists,  manuals,  operating  instructions,  customer and
supplier  lists,  licenses,  permits,  franchises,  the right to use Barringer's
corporate name and the goodwill of Barringer's business;

     (e) All Investment  Property (as defined in the Commercial  Code) including
but not limited to stock and other securities  evidencing ownership of any other
organization,  company or entity as well as all amendments, extensions, renewals
and  replacements  of  the  above,   together  with  all   certificates,   other
instruments,  options,  rights,  interest,  and other distributions issued as an
addition to, in substitution or in exchange for, or on account of, the same, all
whether now  existing or  hereafter  arising and whether now owned or  hereafter
acquired; and

     (f) All  products  and  proceeds  of any and all of the  foregoing  and all
products  and  proceeds of any other  Collateral  including  the proceeds of any
insurance  covering any of the Collateral,  as well as all Deposit  Accounts (as
defined in the Commercial Code), money, cash, and the like.


                                        2

<PAGE>



     3. Barringer's Warranties,  Representations,  and Covenants. In addition to
any  other  warranties,   representations,  or  covenants,  Barringer  warrants,
represents, and covenants that:

     (a) It has the power and  authority  to enter  into this  Agreement,  which
constitutes a legal,  valid,  and binding  agreement  enforceable  against it in
accordance with its terms.

     (b) It will not breach any other  agreement or provision of law by entering
into or performing this Agreement.

     (c) Upon  Secured  Party's  reasonable  request,  Barringer  shall take all
action and execute all documents necessary or appropriate to consummate and give
effect to this Agreement;

     (d) Barringer shall not,  without  Secured  Party's prior written  consent,
which shall not be unreasonably  withheld,  create,  incur, assume, or suffer to
exist  any debt or other  obligation  for  borrowed  money  other  than  current
accounts payable and similar current liabilities incurred in the ordinary course
of business from the date of this Agreement;

     (e)  Barringer  shall use  diligent  efforts to protect  and  preserve  the
Collateral,  including  to maintain  in good  standing,  to enforce,  and to not
breach, all existing and future contracts to which Barringer is a party; and

     (f) Upon reasonable notice from Secured Party, it will permit Secured Party
or their  representatives  to inspect  any of  Barringer's  corporate  books and
financial  records and discuss  with its officers  its  affairs,  finances,  and
accounts.

     4.  Power  of  Attorney.   Barringer   hereby  appoints  Secured  Party  as
attorney-in-fact  and grants  Secured  Party a proxy to do, after and during the
continuance of an Event of Default (as herein  defined),  any act that Barringer
is  obligated  by this  Agreement  to do and to exercise  any and all rights and
powers as Barringer might exercise with respect to the Collateral. This power of
attorney is a power coupled with an interest and shall be irrevocable  until the
Secured  Obligations  are  satisfied.  Secured  Party  shall be under no duty to
exercise or withhold the exercise of any of the rights,  powers,  or  privileges
expressly or implicitly  granted to Secured Party in this  Agreement,  and shall
not be liable for any failure to do so or any delay in doing so.  Secured  Party
shall not be liable for any act or  omission or for any error of judgment or any
mistake  of  fact  or law in  its  individual  capacity  or in its  capacity  as
attorney-in-fact  except acts or omissions resulting from its willful misconduct
or gross negligence. This power of attorney is conferred on the Secured Party to
protect, preserve, and realize upon its security interest in the Collateral.

     5. Events of Default.  Any one or more of the following events  constitutes
an event of default ("Event of Default"):

     (a)  Barringer's  failure to pay on the due date any amount of principal or
interest owing under the Note.

                                        3

<PAGE>



     (b) The  occurrence  of a default,  or of any event that with the giving of
notice or the passage of time could constitute a default, under any agreement of
Barringer evidencing an obligation of Barringer for borrowed money.

     (c) A breach of or failure by Barringer to perform any of the terms of: (i)
the Note (other than the failure to make payment due under Note which payment is
the subject of subsection (a)), or(ii) this Agreement.

     (d) Any levy,  seizure,  attachment,  or similar legal service of or on the
Collateral  not  discharged by within ten (10) days, or any sale,  transfer,  or
disposition of any interest in the Collateral, other than in the ordinary course
of business, without Secured Party's prior written consent.

     6. Remedies. (a) Upon the occurrence of any Event of Default, Secured Party
may in its sole discretion,  with or without notice to Barringer and in addition
to all other rights and remedies at law or in equity:

          (i)  Declare  the  entire  balance  of the  Note  immediately  due and
payable; and

          (ii) Sell or otherwise  dispose of the  Collateral in accordance  with
the terms hereof.

     (b)(i) In  addition  to all other  rights and  remedies  granted to Secured
Party in this  Agreement and in any other  agreement  securing,  evidencing,  or
relating to the Secured Obligations,  Secured Party shall have all of the rights
and remedies of a secured party under the Commercial  Code Without  limiting the
generality of the foregoing, Secured Party may:

               (A) Without demand or notice to Barringer,  collect,  receive, or
take possession of the Collateral or any part thereof;

               (B) Sell or  otherwise  dispose  of the  Collateral,  or any part
thereof,  in one or more parcels at public or private sale or sales,  at Secured
Party's offices or elsewhere, for cash, on credit, or for future delivery; and

               (C) Bid and become a  purchaser  at any sale free of any right or
equity of  redemption of  Barringer,  which right or equity is hereby  expressly
waived and released by Barringer.

                  (ii) Upon Secured  Party's  request,  Barringer shall assemble
the Collateral and make it available to Secured Party at any place designated by
Secured Party that is reasonably convenient to Barringer and Secured Party.


                                        4

<PAGE>


          (iii)  Secured  Party shall have the right to  determine  the order in
which any or all of the Collateral  shall be subjected to the remedies for which
this  Agreement  or the Note  provide.  Secured  Party  shall  have the right to
determine the order in which any or all portions of the indebtedness  secured by
this  Agreement  are satisfied  from the proceeds  realized upon the exercise of
such  remedies.  Barringer,  any party who consents to this  Agreement,  and any
party who hereafter  acquires a security  interest in the Collateral and who has
actual or constructive notice of this Agreement, hereby waives any and all right
to require the  marshaling of Collateral in connection  with the exercise of any
of the remedies for which this Agreement or the Note provide.

          (iv) Unless the Collateral  threatens to decline  speedily in value or
is of the type customarily sold on a recognized market, Secured Party shall give
Barringer  reasonable  notice of the time and place of any public sale or of the
time after which any private sale or other  disposition  of the Collateral is to
be made,  and notice given at least ten (10) days before the time of the sale or
other  disposition  shall be  conclusively  presumed to be  reasonable.  Without
limiting what  constitutes a sale of the  Collateral in a reasonable  manner,  a
public  sale in the  following  fashion  shall be  conclusively  presumed  to be
reasonable:

               (A)  Notice is given at least ten (10)  days  before  the date of
sale by publication once in a newspaper of general circulation  published in the
county in which the sale is to be held;

               (B) The sale is held in a county in which the  Collateral  or any
part is located or in a county in which Barringer has its place of business;

               (C)  Payment  is  in  cash  or  by  certified  check  immediately
following the close of the sale;

               (D) The sale is by  auction,  but  need not be by a  professional
auctioneer; and

               (E) The Collateral is sold as is and without any  preparation for
sale.

          (v) Secured  Party may adjourn any public or private sale from time to
time by announcement  at the time and place fixed  therefor,  and such sale may,
without  further  notice,  be made at the  time  and  place  to  which it was so
adjourned.  Barringer  shall be liable for all  expenses of  retaking,  holding,
preparing  for sale, or the like,  and all  attorneys'  fees and other  expenses
incurred  by Secured  Party in  connection  with the  collection  of the Secured
Obligations  and the  enforcement of Secured  Party's rights  hereunder,  all of
which expenses and fees shall constitute Secured Obligations.

          (vi)  Secured  Party  shall apply the  Collateral  against the Secured
Obligations in the following manner:


                                        5

<PAGE>


               (A) First, to Secured Party for any unpaid expenses owed to it by
Barringer under this Agreement or the Note;

               (B)  Second,  for any unpaid  interest  owed to Secured  Party by
Barringer under this Agreement or the Notes;

               (C) Third,  any surplus then  remaining  shall be paid to Secured
Party towards  principal amounts owed to it by Barringer under this Agreement or
the Note; and

               (D)  Fourth,   any  surplus  then  remaining  shall  be  paid  to
Barringer.

          (c) Secured Party may cause any or all of the Collateral held by it to
be transferred into Secured Party's name or the name or names of Secured Party's
nominee or nominees.

          (d)  Secured  Party  shall  have no  obligation  to  offer to sell the
Collateral.  If Secured  Party offers to sell the  Collateral,  it shall have no
obligation to consummate a sale of the Collateral if, in its reasonable business
judgment,  none  of  the  offers  received  by it  reasonably  approximates  the
Collateral's fair value. If Secured Party elects not to sell the Collateral,  it
may  elect  to  follow  the  procedures  set  forth in the  Commercial  Code for
retaining the Collateral in satisfaction of Barringer's  obligation,  subject to
Barringer's rights under such procedures.

          (f) Secured Party shall be entitled to the  appointment  of a receiver
for the Collateral as a matter of right  regardless of whether the  Collateral's
apparent  value exceeds the  outstanding  principal  amount of the Notes and any
receiver appointed may serve without bond. Employment by Secured Party shall not
disqualify a person from serving as receiver.

     7. Obligations Absolute. Barringer's obligations under this Agreement shall
be  irrevocable,   absolute  and   unconditional  and  shall  not  be  released,
discharged,  reduced,  or in any way  impaired by any  circumstance  whatsoever,
including,  without  limitation,  any  amendment,  modification,  extension,  or
renewal  of  the  Secured  Obligations,  or any  other  document  or  instrument
evidencing,  securing, or otherwise relating to the Secured Obligations,  or any
release,  subordination,  or impairment of Collateral,  or any waiver,  consent,
extension,  indulgence,  compromise,  settlement, or other action or inaction in
respect  of  the  Secured  Obligations,  or any  other  document  or  instrument
evidencing,  securing, or otherwise relating to the Secured Obligations,  or any
exercise  or failure to exercise  any right,  remedy,  power,  or  privilege  in
respect of the Secured Obligations.

     8. Insurance. Barringer shall have and maintain, or cause to be maintained,
insurance  at all times with  respect to all  Collateral  against  such risks as
Secured  Party may  reasonably  require,  in such form,  for such  periods,  and
written by such companies as may be satisfactory to Secured Party.  All policies
of insurance  shall have  endorsed a loss payable  clause  acceptable to Secured
Party  and such  other  endorsements  as  Secured  Party  may from  time to time
request,  and Barringer  will promptly  provide  Secured Party with the original
policies or  certificates  of such  insurance.  Barringer  shall promptly notify
Secured  Party of any loss or damage that may occur to the  Collateral.  Secured

                                        6

<PAGE>


Party is hereby  authorized  to make proof of loss if it is not made promptly by
Barringer.  All  proceeds of any  insurance on the  Collateral  shall be held by
Secured Party as a part of the Collateral.  Such proceeds shall be paid out from
time to time upon order of  Barringer  for the purpose of paying the  reasonable
cost of repairing or restoring the property damaged.  Any proceeds that have not
been so paid out within one hundred twenty (120) days following their receipt by
Secured  Party shall be applied to the  prepayment  of principal on the Note. In
the event of failure to provide insurance as herein provided, Secured Party may,
at Secured Party's option, provide such insurance at Barringer's expense.

     9.  Inspection;  and Protection of Secured  Party's  Security.  (a) Secured
Party may make or cause to be made  reasonable  entries upon and  inspections of
Barringer's premises to inspect the Collateral.

     (b) If Barringer fails to perform its  obligations  under this Agreement or
the  Note,  or if any  action  or  proceeding  is  commenced  that  affects  the
Collateral or title thereto or the interest of Secured Party therein,  including
insolvency or arrangements or proceedings involving a bankrupt or decedent, then
Secured Party, at its option, may make such appearance,  disburse such sums, and
take such action as it deems necessary,  in its sole discretion,  to protect its
interest, including but not limited to (i) disbursement of attorneys' fees, (ii)
entry upon  Barringer's  property to make repairs to the  Collateral,  and (iii)
procurement of satisfactory  insurance.  Any amounts  disbursed by Secured Party
pursuant  to this  Section,  with  interest  thereon,  shall  become  additional
indebtedness  of  Barringer  secured by this  Agreement.  Unless  Barringer  and
Secured Party agree to other terms of payment, such amounts shall be immediately
due and payable and shall bear  interest  from the date of  disbursement  at the
rate of eighteen  percent (18%) per annum,  be collected  from  Barringer  under
applicable law. Nothing contained in this Section shall require Secured Party to
incur any expense or take any action.

     10. Barringer and Lien Not Released.  From time to time, Secured Party may,
at its option,  without notice to Barringer or without Barringer's  consent, and
without  liability on Secured  Party's  part,  and  notwithstanding  Barringer's
breach of any  provision  of this  Agreement  or the Note,  extend  the time for
payment of  Barringer's  indebtedness  or any part thereof,  reduce the payments
thereon,  release  anyone liable on any of said  indebtedness,  accept a renewal
note or  notes  therefor,  modify  the  terms  and the time of  payment  of said
indebtedness,  release  from  the  lien  of  this  Agreement  any  part  of  the
Collateral,  take or release other or additional security,  reconvey any part of
the Collateral,  consent to any plan of or relating to the Collateral, and agree
in  writing  with  Barringer  to  modify  the  rate of  interest  or  period  of
amortization  of the Note or  change  the  amount  of any  installments  payable
thereunder.  Any actions taken by Secured  Party  pursuant to this Section shall
not affect the obligation of Barringer to pay the sums secured by this Agreement
and to observe the covenants of Barringer contained herein, shall not affect the
guaranty of any person for payment of the indebtedness secured hereby, and shall
not affect the lien or  priority  of lien  hereof on the  Collateral.  Barringer
shall  pay  Secured  Party a  reasonable  service  charge,  together  with  such
attorneys' fees as may be incurred at Secured Party's option for any such action
if taken at Barringer's request.

7

<PAGE>



     11.  Forbearance by Secured Party Not a Waiver.  Any forbearance by Secured
Party in exercising any right or remedy hereunder, or otherwise afforded by law,
shall not be a waiver  of or  preclude  the  exercise  of any  right or  remedy.
Secured Party's acceptance of payment of any sum secured by this Agreement after
the due date of such payment  shall not be a waiver of Secured  Party's right to
either  require  prompt  payment  when due of all other  sums so  secured  or to
declare a default  for  failure  to make  prompt  payment.  The  procurement  of
insurance  or the  payment of taxes or other  liens or charges by Secured  Party
shall  not  be a  waiver  of  its  right  to  accelerate  the  maturity  of  the
indebtedness secured by this Agreement, nor shall Secured Party's receipt of any
awards,  proceeds or damages as provided  in this  Agreement  operate to cure or
waive Barringer's default in payment of sums secured by this Agreement.

     12. Uniform Commercial Code Security Agreement.  This Agreement is intended
to be a security  agreement pursuant to the Commercial Code for any of the items
specified  above as part of the Collateral  that,  under  applicable law, may be
subject to a security  interest  pursuant to the Commercial  Code, and Barringer
hereby grants  Secured  Party a security  interest in said  Collateral.  Secured
Party may file any appropriate  document in the appropriate index as a financing
statement  for any of the  items  specified  above  as  part of the  Collateral.
Barringer  shall  execute and deliver to Secured  Party,  upon its request,  any
financing  statements,  as well as extensions,  renewals and amendments thereof,
and reproductions of this Agreement in such form as Secured Party may require to
perfect a security interest with respect to said items.  Barringer shall pay all
costs  of  filing  such  financing  statements  and  any  extensions,  renewals,
amendments,  and  releases  thereof,  and  shall  pay all  reasonable  costs and
expenses of any record  searches  for  financing  statements  Secured  Party may
reasonably  require.  Consistent  with but not as a  limitation  on  Barringer's
covenants under Section 3(b) and 3(h)(i),  without Secured Party's prior written
consent,  Barringer  shall not create or suffer to be created any other security
interest in the Collateral,  including  replacements and additions thereto. Upon
the occurrence of an Event of Default,  Secured Party shall have the remedies of
a secured party under the  Commercial  Code,  and at Secured  Party's option may
also invoke the other remedies for which this Agreement or the Note provide.  In
exercising any of said remedies,  Secured Party may proceed  against any part of
the Collateral  separately or together and in any order  whatsoever,  without in
any way affecting the  availability of its remedies under the Commercial Code or
of the other remedies for which Agreement or the Note provide.

     13. Acceleration in Event of Barringer's Insolvency. If either:

     (a) Barringer  voluntarily  files a petition  under the federal  Bankruptcy
Act,  as such Act may from  time to time be  amended,  or under any  similar  or
successor  federal statute relating to bankruptcy,  insolvency,  arrangements or
reorganizations,  or under any state  bankruptcy or insolvency  act, or files an
answer in an  involuntary  proceeding  admitting  insolvency or inability to pay
debts, or if Barringer shall be adjudged a bankrupt,

     (b) A trustee or receiver is appointed for Barringer's property,


                                        8

<PAGE>



     (c) Any of the Collateral  becomes subject to the jurisdiction of a federal
bankruptcy court or similar state court,

     (d) Barringer makes an assignment for the benefit of its creditors, or

     (e)  There is an  attachment,  receivership,  execution  or other  judicial
seizure of any of the Collateral,

then  Secured  Party  may,  at its  option,  declare  all sums  secured  by this
Agreement to be immediately  due and payable  without prior notice to Barringer,
and Secured  Party may invoke any  remedies  permitted  by this  Agreement.  Any
attorneys' fees and other expenses  incurred by Secured Party in connection with
Barringer's  bankruptcy  or any of the other  events  described  in this Section
shall be additional indebtedness of Barringer secured by this Agreement.

     14. Notices. All notices, demands or communications  ("Notices") under this
Agreement  shall be in writing and shall be  addressed to the party as set forth
below.  All Notices shall be given by: (i) personal  delivery,  (ii)  electronic
communication,  provided  the  transmitting  device  used by the party  provides
documentary  confirmation  of  receipt,  (iii)  certified  mail  return  receipt
requested,  or (iv) a  nationally  recognized  overnight  courier  service.  All
Notices  shall be  effective  and shall be deemed  delivered  (i) if by personal
delivery or by  overnight  courier,  on the date of delivery if  delivered on or
before  4:30  p.m.  on such  day;  otherwise,  it shall be  deemed  to have been
delivered on the next  business day  following  delivery,  (ii) if by electronic
communication,  on the day of receipt unless  received after 4:30 p.m., in which
event it  shall be  deemed  to have  been  received  on the  next  business  day
following receipt of the electronic communication,  and (iii) if solely by mail,
on the first to occur or actual  receipt or the third business day following the
date of posting (as evidenced by the postal  receipt for the  posting).  A party
may change its address by Notice to the other party.

If to Secured Party:

                  -------------------------
                  -------------------------
                  -------------------------
                  -------------------------
                  Telephone No.:
                  Telecopier No.:

If to Barringer:

                  Barringer Laboratories, Inc.
                  15000W. 6th Avenue
                  Golden, Colorado  80401
                  Attention:
                  Telephone No:  (303) 277-1687
                  Telecopier No.: (303) 277-1689


                                        9

<PAGE>



     15. Further  Assurances.  Without further  consideration,  each party shall
take  such  further  actions  and  execute  such  further  documents  as  may be
reasonably  requested by the other party in order to effectuate  the purpose and
intent of this Agreement.

     16.  Governing Law. This Agreement  shall be governed by and interpreted in
accordance  with the Laws of  Colorado,  except  to the  extent  its laws  would
otherwise apply the laws of another jurisdiction.

     17. Entire Agreement;  Successors and Assigns;  Amendment and Waiver.  This
Agreement  contains the entire  understanding  of the parties and supersedes all
prior agreements and understandings  between the parties relating to the subject
matter hereof. No amendment or modification to this Agreement shall be effective
unless be in  writing  and  signed by all  parties.  No waiver by a party of any
breach by any other party of any provision of this  Agreement  shall be deemed a
waiver of any preceding or succeeding breach of the same or any other provisions
hereof. No such waiver shall be effective unless in writing and then only to the
extent expressly set forth in writing.

     18. Other Remedies. Regardless of whether or not provided in other Sections
hereof, no right or remedy expressly  conferred herein shall be exclusive of any
other  right or  remedy  now or  hereafter  available  at law or in  equity.  No
provision  of  this  Agreement  regarding  remedies  shall  be  construed  as  a
limitation  on the nature of the remedies to which a party may be entitled  with
respect to a breach of other provisions of this Agreement.

     19. Section and Other Headings; Pronouns; and Construction. The section and
other  headings  contained in this  Agreement are for reference only and have no
legal  significance.  The use of  pronouns  is  generic  and they shall mean any
gender  as   appropriate.   The  terms  "include"  or  "including,"  or  similar
terminology,  shall be construed as meaning without  limitation as to the nature
or scope of the referenced matters.  This Agreement shall be deemed to have been
drafted by both parties,  and therefore the rule against construing  ambiguities
against the party drafting a contract shall be inapplicable to this Agreement.

     20. Severability.  If any provision of this Agreement is held to be invalid
or unenforceable in whole or in part in any jurisdiction,  such provision,  only
to the extent invalid or unenforceable,  shall be severable from this Agreement,
and the other  provisions of this Agreement  (along with the provision at issue,
to the extent that it would be valid and  enforceable,  and such provision shall
be deemed to be so  reformed)  shall  remain  in full  force and  effect in such
jurisdiction and the remaining provisions hereof shall be liberally construed to
carry  out  the  purpose  and  intent  of  this  Agreement.  The  invalidity  or
unenforceability, in whole or in part, of any provision of this Agreement in any
jurisdiction  shall not affect the validity or  enforceability of such provision
in any other  jurisdiction,  nor shall the invalidity or unenforceability of any
provision  of this  Agreement  with  respect to any person or entity  affect the
validity or enforceability of such provision with respect to any other person or
entity.


                                       10

<PAGE>


     21. Assignment.  Secured Party may at any time and from time to time assign
its rights and  obligations  under this  Agreement  and the  Collateral  and any
portion of the  Collateral.  In each case, the assignee shall be entitled to all
of the rights and  remedies of Secured  Party under this  Agreement  in relation
thereto.

     22.  Attorney's Fees. If a suit or action is brought by Secured Party under
this  Agreement to enforce any of its terms,  Secured Party shall be entitled to
reasonable attorneys fees.

     23.  Termination.  Upon the full  performance  and the full and irrevocable
payment of the Secured Obligations, this Agreement shall terminate.

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

SECURED PARTY:

- ---------------------------------

- ---------------------------------


BARRINGER:

BARRINGER LABORATORIES, INC.

By:
   -------------------------------
Its:
   -------------------------------

                                       11




                                    EXHIBIT A

            REGISTRATION  RIGHTS  AGREEMENT,  dated as of October __, 1999
            (the  "Agreement"),  between Barringer  Laboratories,  Inc., a
            Delaware corporation (the "Company"), AND
                                                      --------------------------
            (together, the "Investors").

     The Company and the  Investors  have entered into  Subscription  Agreements
dated as of October  ___,  1999,  pursuant  to which,  among other  things,  the
Company sold,  pursuant to the terms and conditions thereof, to the Investors in
the aggregate  principal amount of __________  shares of Common Stock, par value
$.01 per share (the "Common Stock") for $---------------.

     In  consideration of the foregoing and of the covenants and obligations set
forth below, the parties agree as follows:

     1. Registration on Request.

     (a) Request.  Subject to the  limitations  set forth in Section 1(b),  upon
written  notice to the Company by any Investor  requesting  registration  of its
Registrable  Securities (as defined in Section 9(b)),  the Company shall use its
best efforts to effect the  registration  under the  Securities Act of 1933 (the
"Securities  Act")  of all or  part of the  Registrable  Securities  in  minimum
amounts of 25% of Registrable  Securities held by each such requesting  Investor
or Investors (each, an "Initiating  Investor").  The Company promptly shall give
notice of such  requested  registration  to all other  Holders  (as  defined  in
Section 9(b)) of Registrable  Securities who are entitled  pursuant to Section 2
to join in such  registration  and,  thereupon,  the Company  shall use its best
efforts to effect,  on the earliest  possible date, the  registration  under the
Securities  Act for public sale (in  accordance  with the method of  disposition
specified in the notice from the  requesting  Holders)  of: (i) the  Registrable
Securities  that the Company has been  requested to register by such  Initiating
Investor  or  Investors;  and (ii) the  other  Registrable  Securities  that the
Company  has been  requested  to  register  by the  Holders  thereof but only if
written  notice was given to the Company within 20 days after the giving of such
notice by the Company.

     (b) Limitations. The Company shall not be required to effect a registration
pursuant to Section 1(a) on more than a total of three  occasions,  with no more
than one request by any Investor;  provided  further,  that a request may not be
made  unless the  requesting  Investor  can  establish  that at least 10% of the
Common Stock will be the subject of the requested registration; it being further
understood and agreed that a registration  effected under Section 2 shall not be
counted as a registration under this Section.

     (c) Effective Registration  Statement. A registration requested pursuant to
this  Section 1 shall not be  deemed  to have  been  effected,  and shall not be
deemed a requested  registration  for purposes of Section 1(a) and Section 1(b):
(i)  unless  a  registration   statement  filed  under  the  Securities  Act  (a
"Registration  Statement")  covering all Registrable  Securities  specified in a
notice from an Initiating  Investor has become effective and remained  effective
in  compliance  with the  provisions of the  Securities  Act with respect to the
disposition of all of such Registrable  Securities  covered by such Registration
Statement until the earlier of such time as all of such  Registrable  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;  (ii) if
after it has become effective,  such registration is interfered with by any stop
order,  injunction or other order or  requirement of the Securities and Exchange
Commission  (the  "Commission")  or other  governmental  agency or court for any

<PAGE>


reason not attributable to the Initiating Investors;  or (iii) if the conditions
to closing  specified in the  underwriting  agreement,  if any,  entered into in
connection  with such  registration  are not satisfied or waived,  other than by
reason of a failure on the part of the Initiating Investors.

     (d) Priority in Requested Registration. So long as the Initiating Investors
hold at least 25% of the Registrable  Securities  issued to the Investors on the
date of this  Agreement,  the  Company  shall  have the right to  include in any
Registration  Statement initiated by an Investor pursuant to this Section 1, for
sale in accordance  with the method of  disposition  specified by the requesting
Investors,  Common Stock to be sold by the Company for its own  account.  If, in
the good-faith judgment of the managing underwriter of any underwritten offering
the  inclusion of all of the  Registrable  Securities  requested  for  inclusion
pursuant  to this  Section 1 and the  Common  Stock  proposed  to be sold by the
Company for its own account would adversely  affect the successful  marketing of
the proposed offering,  then the number of shares of Common Stock to be included
in the offering  shall be reduced to the  required  level,  first,  by excluding
Common  Stock to be sold by the  Company  for its own  account  and  second,  by
reducing the  participation  of such  Initiating  Investors and other Holders in
such offering pro rata among such Initiating Investors and other Holders,  based
upon the amount of Registrable Securities owned by such Initiating Investors and
other Holders. The Company will not cause any other registration  statement with
respect to its  Registrable  Securities for its own account to become  effective
less  than 120 days  after  the  effective  date of any  registration  requested
pursuant  to this  Section  1,  except  in the case of:  (i) a  registration  of
securities  pursuant to a Registration  Statement on Form S-8 or Form S-4 or any
successor form thereto; (ii) any registration statement covering only securities
proposed  to  be  issued  in  exchange  for  securities  or  assets  of  another
corporation;  (iii) any registration statement relating solely to employee stock
option,  stock purchase,  benefit or similar plans; or (iv) other  registrations
required under Section 1.

     2. Incidental Registration.

     (a) Right to Include Registrable  Securities.  If at any time and from time
to time the Company  proposes to register any shares of its capital  stock under
the Securities Act,  whether or not for sale for its own account,  on a form and
in the manner that would permit  registration of Registrable  Securities for the
sale to the public  under the  Securities  Act,  the Company  will give  written
notice to all Holders of its  intention to do so. Upon the written  request of a
Holder  given within 20 days after the giving of any such notice by the Company,
the  Company  will  use  its  best  efforts  to  cause  to be  included  in such
Registration  Statement  all of the  Registrable  Securities  so  requested  for
inclusion by Holders. If the Registration  Statement is to cover, in whole or in
part, any underwritten  distribution,  the Company shall use its best efforts to
cause the  Registrable  Securities  requested  for  inclusion  pursuant  to this
Section to be  included  in the  underwriting  on the same terms and  conditions
(including  any  lock-up)  as  the  shares  otherwise  being  sold  through  the
underwriters.

     (b) Priority in Incidental Registrations. If, in the good faith judgment of
the managing underwriter of any underwritten  offering,  the inclusion of all of
the Registrable  Securities  requested for inclusion  pursuant to this Section 2
might adversely affect the successful  marketing of the proposed offering,  then
the number of shares of capital stock and Registrable Securities,  if any, to be
included in such registration shall be reduced, such reduction shall be applied,
first by excluding (on a pro rata basis) capital stock of the Company to be sold
by persons other than the Holders,  and  Registrable  Securities  proposed to be
sold by all Holders and second,  by excluding shares of capital stock to be sold
by the Company for its own account.  Notwithstanding  the foregoing  provisions,
the Company may withdraw or discontinue any registration  statement  referred to
in this Section 2 without  incurring  any  liability  to Holders of  Registrable
Securities.

     3. Registration Procedures.  If and whenever the Company is required by the
provisions  of  Section  1  or 2  to  effect  the  registration  of  Registrable
Securities  under the  Securities  Act, the Company  will,  at its  expense,  as
expeditiously as possible:

                                       2
<PAGE>


     (i)  prepare  and,  in any  event  within  45  days  after  a  request  for
registration  has  been  given  to the  Company,  file  with  the  Commission  a
Registration  Statement with respect to such Registrable  Securities and use its
best efforts to cause such Registration Statement to become effective;  provided
that the Company may withdraw or discontinue any  registration of its securities
which is being effected pursuant to Section 2 at any time prior to the effective
date of the Registration Statement;

     (ii) prepare and file with the Commission  such  amendments and supplements
to any  Registration  Statement  referred to in clause (i) of this Section 3 and
the  prospectus  used in  connection  therewith as may be necessary to keep such
Registration  Statement  effective  and  updated  until  such time as all of the
Registrable  Securities  have been disposed of in  accordance  with the intended
methods of disposition  by the Holder or Holders set forth in such  Registration
Statement and to comply with the  provisions of the  Securities Act with respect
to the disposition of all Registrable  Securities  covered by such  Registration
Statement  during  such  period  in  accordance  with the  intended  methods  of
disposition  by the Holder or  Holders  thereof  set forth in such  Registration
Statement;  provided that before filing a Registration  Statement or prospectus,
or any  amendments or  supplements  thereto,  the Company will  furnish,  at the
Company's  expense,  to one counsel  selected  jointly by the Holders  holding a
majority of the Registrable Securities covered by such Registration Statement to
represent all Holder's of Registrable  Securities  covered by such  Registration
Statement, copies of all documents proposed to be filed, which documents will be
subject to the review of such counsel;

     (iii)  furnish  to each  Holder of such  Registrable  Securities:  (a) such
number of copies of any Registration Statement referred to in clause (i) of this
Section 3 and of each amendment and  supplement  thereto (in each case including
all  exhibits);  (b) such  number of copies of the  prospectus  included in such
Registration  Statement  (including  each  preliminary  prospectus  and  summary
prospectus),  and any other prospectus filed under Rule 424 under the Securities
Act in conformity  with the  requirements  of the  Securities  Act; and (c) such
other documents as such Holder may reasonably request,

     (iv)  use  its  best  efforts  to  register  or  qualify  such  Registrable
Securities  covered by any Registration  Statement  referred to in clause (i) of
this  Section 3 under such other  securities  or blue sky laws of such  domestic
jurisdictions as each Holder shall reasonably request,  and do any and all other
acts and things  which may be  reasonably  necessary or advisable to enable such
Holder to consummate the  disposition in such  jurisdictions  of the Registrable
Securities owned by such seller,  except that the Company shall not for any such
purpose be required to qualify generally to do business as a foreign corporation
in any  jurisdiction  where,  but for the  requirements  of this clause (iv), it
would not be obligated  to be so  qualified or to consent to general  service of
process in any such jurisdiction;

     (v) use its best efforts to cause such Registrable  Securities covered by a
Registration  Statement to be registered with or approved by such other domestic
governmental agencies or authorities as may be necessary to enable the seller or
sellers thereof to consummate the disposition of such Registrable Securities;

     (vi) cause representatives of the Company to participate in any "road show"
or "road shows"  reasonably  requested by any  underwriter of an underwritten or
"best efforts" offering of any Registrable Securities;

     (vii) notify each seller of any such  Registrable  Securities  covered by a
Registration  Statement,  at any time  when a  prospectus  relating  thereto  is
required to be delivered  under the Securities Act or of the Company's  becoming
aware that the prospectus  included in such Registration  Statement,  as then in
effect,  includes  an untrue  statement  of a material  fact or omits to state a
material fact required to be stated  therein or necessary to make the statements
therein not misleading in the light of the circumstances  then existing,  and at

                                       3
<PAGE>


the request of any such seller,  prepare and furnish to such seller a reasonable
number of copies of an amended or supplemental prospectus as may be necessary so
that, as  thereafter  delivered to the sellers of such  Registrable  Securities,
such  prospectus  shall not include an untrue  statement  of a material  fact or
omits to state a material  fact  required to be stated  therein or  necessary to
make the  statements  therein not  misleading in the light of the  circumstances
then existing;

     (viii)  otherwise use its best efforts to comply with all applicable  rules
and regulations of the Commission, and make available to its Holders, as soon as
reasonably  practicable  (but not more than eighteen months) after the effective
date of the Registration  Statement,  an earnings  statement which shall satisfy
the  provisions  of  Section  11(a)  of the  Securities  Act and the  rules  and
regulations promulgated thereunder;

     (ix)  use its best  efforts  to list  such  Registrable  Securities  on any
securities  exchange or automated  quotation  system on which  securities of the
same class are then listed,  if such  Registrable  Securities are not already so
listed and if such listing is then permitted under the rules of such exchange or
system,  and to  provide a transfer  agent and  registrar  for such  Registrable
Securities covered by a Registration Statement not later than the effective date
of such Registration Statement;

     (x)  enter  into  such  customary  agreements  (including  an  underwriting
agreement  in  customary  form) and take such  other  actions  as  sellers  of a
majority of such Registrable Securities or the underwriters,  if any, reasonably
request in order to expedite or facilitate the  disposition of such  Registrable
Securities;

     (xi)  obtain  a  "cold  comfort"  letter  or  letters  from  the  Company's
independent  public  accountants in customary  form and covering  matters of the
type customarily covered by "cold comfort" letters as the seller or sellers of a
majority of such Registrable Securities shall reasonably request;

     (xii)  obtain an opinion of counsel for the Company in  customary  form and
covering matters of the type customarily covered in opinions of issuer's counsel
as the seller or sellers of a majority  of such  Registration  Securities  shall
reasonably request; and

     (xiii) make  available  for  inspection  by any seller of such  Registrable
Securities covered by a Registration Statement by any underwriter  participating
in any disposition to be effected pursuant to such Registration Statement and by
any attorney,  accountant or other agent retained by any such seller or any such
underwriter,  all pertinent  financial and other  records,  pertinent  corporate
documents  and  properties  of the  Company,  and  cause  all  of the  Company's
officers, directors and employees to supply all information reasonably requested
by any such seller,  underwriter,  attorney,  accountant  or agent in connection
with such Registration Statement.

     4. Expenses. With respect to each registration effected pursuant to Section
1 or 2, all  Registration  Expenses  (defined  below)  in  connection  with such
registration  and the public offering in connection  therewith shall be borne by
the Company;  provided that Holders participating in any such registration shall
bear their pro rata share of the underwriting  discounts and selling commissions
(on the  basis of the  number of  Registrable  Securities  of each  such  person
included in such registration).  "Registration  Expenses" shall mean any and all
expenses  incidental  to  performance  of or  compliance  with  this  Agreement,
including,  without  limitation,  (i) all  registration  and filing  fees of the
Commission or the National  Association of Securities  Dealers,  Inc.,  (ii) all
fees and expenses of complying with  securities or blue sky laws (including fees
and  disbursements  of counsel for the  underwriters in connection with blue sky
qualifications of the Registrable Securities), (iii) all printing, messenger and

                                       4
<PAGE>


delivery  expenses,  (iv) all fees and expenses  incurred in connection with the
listing of the  Registrable  Securities on any securities  exchange or automated
quotation  system pursuant to Section 3(ix),  (v) the fees and  disbursements of
counsel for the Company and of its independent public accountants, including the
expenses of any special  audits  and/or "cold  comfort"  letters  required by or
incident  to such  performance  and  compliance,  (vi) the  reasonable  fees and
disbursements  of one counsel selected (under Section 3(ii)) by the Holders of a
majority of the Registrable Securities being registered to represent all Holders
of the  Registrable  Securities  being  registered in connection  with each such
registration,  (vii) any fees and disbursements of underwriters customarily paid
by the issuers or sellers of  securities,  including fees and  disbursements  of
counsel  for  the  underwriters,   but  excluding   underwriting  discounts  and
commissions,  (viii)  liability  insurance  if the  Company so desires or if the
underwriters  so  require,  and (ix) the  reasonable  fees and  expenses  of any
special  experts  retained  by the  Company  in  connection  with the  requested
registration.

     5. Indemnification and Contribution.

     (a)  Indemnification by the Company.  In the event of a registration of any
Registrable  Securities  pursuant to Section 1 or 2, the Company will  indemnify
and hold  harmless  each  Holder of such  Registrable  Securities  included in a
Registration  Statement  pursuant to the  provisions  of this  Agreement and any
underwriter (as defined in the Securities Act) of such  Registrable  Securities,
and their respective Affiliates,  and each of their successors from and against,
and will reimburse such Holder,  underwriter  and Affiliate with respect to, any
and all  claims,  actions,  demands,  losses,  damages,  liabilities,  costs and
expenses to which such Holder, underwriter or Affiliate may become subject under
the Securities Act or otherwise,  including,  without limitation, the reasonable
fees and expenses of legal counsel  (including those incurred in connection with
any claim for indemnity  hereunder)  insofar as such claims,  actions,  demands,
losses,  damages,  liabilities,  costs or expenses (or actions,  or proceedings,
whether  commenced or threatened in respect  thereof)  arise out of or are based
upon any untrue  statement or alleged  untrue  statement  of any  material  fact
contained in such Registration  Statement,  any prospectus  contained therein or
any  amendment  or  supplement  thereto,  or arise out of or are based  upon the
omission or alleged  omission to state  therein a material  fact  required to be
stated  therein or necessary  to make the  statements  therein,  in light of the
circumstances  in which  they  are  made,  not  misleading  or arise  out of any
violation by the Company of any rule or regulation  under the  Securities Act or
any state  securities  laws  applicable to the Company and relating to action of
inaction required of the Company in connection with such registration;  provided
that the Company  will not be liable in any case to the extent,  but only to the
extent, that any such claim, action,  demand, loss, damage,  liability,  cost or
expense  arises out of or is based upon an untrue  statement or omission made in
reliance upon and in strict conformity with information furnished by such Holder
or such underwriter in writing  specifically for use in the preparation thereof.
This  indemnity  shall  remain  in  full  force  and  effect  regardless  of any
investigation made by or on behalf of such Holder,  underwriter or Affiliate and
shall  survive  the  transfer  of  such   securities  by  such  Holder  or  such
underwriter.

     (b) Indemnification by the Holders. Each Holder of Registrable  Securities,
severally  and not  jointly,  which  Registrable  Securities  are  included in a
registration  pursuant to the provisions of this  Agreement,  will indemnify and
hold harmless the Company,  each person, if any, who controls the Company within
the meaning of the  Securities  Act,  each  officer of the Company who signs the
Registration Statement including such Registrable  Securities,  each director of
the Company,  each  underwriter  and any person who controls the underwriter and
each of their  successors  from and against,  and will reimburse the Company and
such officer,  director,  underwriter or controlling person with respect to, any
and all  claims,  actions,  demands,  losses,  damages,  liabilities,  costs  or
expenses  to  which  the  Company  or such  officer,  director,  underwriter  or
controlling  person may become  subject under the  Securities  Act or otherwise,
insofar as such claims, actions, demands, losses, damages, liabilities, costs or
expenses  arise out of or are based upon any untrue  statement  of any  material
fact contained in such Registration Statement,  any prospectus contained therein
or any  amendment or supplement  thereto,  or arise out of or are based upon the
omission  to state  therein a material  fact  required  to be stated  therein or
necessary to make the statements therein, in light of the circumstances in which
they are made, not  misleading;  provided that such Holder will be liable in any
such case to the extent,  but only to the extent,  that any such claim,  action,

                                       5
<PAGE>


demand, loss, damage,  liability, cost or expense arises out of or is based upon
an untrue  statement or omission made in reliance upon and in strict  conformity
with written  information  furnished by such Holder  specifically for use in the
preparation thereof.

     (c)  Notices  of  Claims,  etc.  Promptly  after  receipt  by a party to be
indemnified  pursuant to the provisions of Section 5(a) or 5(b) (an "indemnified
party") of notice of the commencement of any action involving the subject matter
of the foregoing indemnity  provisions,  such indemnified party will, if a claim
thereof is to be made against the indemnifying  party pursuant to the provisions
of Section  5(a) or 5(b),  notify  the  indemnifying  party of the  commencement
thereof,  but the omission to so notify the indemnifying  party will not relieve
it from any liability  which it may have to an indemnified  party otherwise than
under this Section and shall not relieve the  indemnifying  party from liability
under  this  Section  unless,  and to the  extent,  such  indemnifying  party is
prejudiced  by such  omission.  In case  such  action  is  brought  against  any
indemnified  party and it notifies the  indemnifying  party of the  commencement
thereof,  the indemnifying party shall have the right to participate in, and, to
the extent that it may wish, jointly with any other indemnifying party similarly
notified, to assume the defense thereof, with counsel reasonably satisfactory to
such indemnified party, and after the notice from the indemnifying party to such
indemnified party of its election to assume the defense thereof, the indemnified
party will not be liable to such indemnified party pursuant to the provisions of
this Section 5(a) and 5(b) for any legal expense  subsequently  incurred by such
indemnified  party in connection  with the defense thereof other than reasonable
costs of  investigation;  provided  that,  if the  defendants in any such action
include  both  the  indemnified  party  and  the  indemnifying   party  and  the
indemnified  party shall have reasonably  concluded that there may be reasonable
defenses  available  to it that  are  different  from  or  additional  to  those
available to the indemnifying party or if the interests of the indemnified party
reasonably  may be deemed to conflict  with the  interests  of the  indemnifying
party,  the indemnified  party shall have the right to select a separate counsel
and to assume such legal defenses and otherwise to participate in the defense of
such  action,  with the  expenses  and fees of such  separate  counsel and other
expenses  related to such  participation  to be reimbursed  by the  indemnifying
party as incurred. No indemnifying party shall be liable to an indemnified party
for  any  settlement  of  any  action  or  claim  without  the  consent  of  the
indemnifying  party and no  indemnifying  party may  unreasonably  withhold  its
consent to any such  settlement.  No  indemnifying  party will,  except with the
consent of the indemnified party, consent to entry of any judgment or enter into
any  settlement  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 and equitable claims in respect to such claim or litigation.

     (d) Contribution.  In order to provide for just and equitable  contribution
to joint liability under the Securities Act in any case in which either: (i) any
Holder  exercising  rights under this Agreement or any underwriter makes a claim
for indemnification pursuant to this Section but it is judicially determined (by
the entry of a final judgment or decree by a court of competent jurisdiction and
the expiration of time to appeal or the denial of the last right of appeal) that
such  indemnification may not be enforced in such case  notwithstanding the fact
that  this  Section  provides  for   indemnification   in  such  case;  or  (ii)
contribution  under the  Securities  Act may be required on the part of any such
Holder  or  underwriter,  as  the  case  may  be,  in  circumstances  for  which
indemnification  is provided  under this Section 5, then, and in each such case,
the Company on the one hand and such Holder or underwriter,  as the case may be,
on the other,  will nevertheless  contribute to the aggregate  claims,  actions,
demands,  losses, damages,  liabilities,  costs or expenses to which they may be
subject (after contribution from others) in such proportion as is appropriate to
reflect the  relative  fault of the Company on the one hand and of the Holder of
Registrable Securities or the underwriter,  as the case may be, on the other, in
connection  with the  statements  or  omissions  that  resulted in such  claims,
actions,  demands, losses, damages,  liabilities,  costs or expenses, as well as
any other relevant equitable  considerations.  The relative fault of the Company
on the one hand and of the Holder of Registrable  Securities or the underwriter,
as the case may be, on the other,  shall be  determined  by reference  to, among
other things,  whether the untrue or alleged untrue statement of a material fact

                                       6
<PAGE>


or omission or alleged  omission to state a material fact relates to information
supplied  by the  Company  on the  one  hand  or by the  Holder  of  Registrable
Securities  or the  underwriter,  as the case  may be,  on the  other,  and each
party's  relative  intent,  knowledge,  access to information and opportunity to
correct or prevent such statement or omission;  provided that, in any such case,
(A) no person  or entity  guilty of  fraudulent  misrepresentation  (within  the
meaning of Section 11(f) of the Securities Act) will be entitled to contribution
from  any   person  or   entity   who  was  not   guilty   of  such   fraudulent
misrepresentation  and (B) no such  Holder or  underwriter  will be  required to
contribute  any  amount in excess of the  proceeds  received  by such  Holder or
underwriter,  as the case  may be,  from the  sales  of  Registrable  Securities
covered by the Registration Statement.

     (e) Other  Indemnification.  Notwithstanding  the foregoing,  to the extent
that  the  provisions  on  indemnification  and  contribution  contained  in the
underwriting  agreement entered into in connection with the underwritten  public
offering are in conflict with the foregoing  provisions,  the  provisions in the
underwriting agreement shall control.

     6. Reporting Requirements Under Securities Exchange Act of 1934.

     (a)  Exchange  Act   Reporting.   The  Company  shall  keep  effective  its
registration  under  Section  12 of the  Securities  Exchange  Act of 1934  (the
"Exchange Act"), and shall timely file such  information,  documents and reports
as the  Commission  may  require or  prescribe  under the  Exchange  Act, or the
Company  shall  timely  file such  information,  documents  and  reports  as the
Commission may require or prescribe under Section 13 of the Exchange Act.

     (b)  Furnishing  Information to Holders.  The Company shall  forthwith upon
request furnish any Holder of Registrable  Securities (a) a written statement by
the Company that it has complied with such reporting requirements, (b) a copy of
the most  recent  Form 10-K or Form 10-Q filed by the  Company and a copy of the
most  recent  annual or  quarterly  report  of the  Company  distributed  to its
shareholders, and (c) such other reports and documents filed by the Company with
the  Commission as such Holder may reasonably  request in availing  itself of an
exemption for the sale of Registrable  Securities without registration under the
Securities Act.

     (c) Rule 144. The Company  acknowledges and agrees that the purposes of the
requirements contained in this Section 6 are to enable any such Holder to comply
with the current public information  requirements  contained in paragraph (c) of
Rule 144 under the Securities Act should such Holder ever wish to dispose of any
of the securities of the Company acquired by it without  registration  under the
Securities  Act in  reliance  upon Rule 144 (or any other  similar or  successor
exemptive  provision).  In addition,  the Company shall take such other measures
and file such other  information,  documents  and reports as shall  hereafter be
required by the Commission as a condition to the  availability of Rule 144 under
the Securities Act (or any similar or successor exemptive provision hereafter in
effect).  The Company also covenants to use its best efforts, to the extent that
it is reasonably  within its power to do so, to qualify for the use of Form S-3.
From and after the effective date of the first  Registration  Statement filed by
the  Company,  the  Company  agrees to use its best  efforts to  facilitate  and
expedite  transfers  of  Registrable  Securities  pursuant to Rule 144 under the
Securities  Act (or any similar or successor  exemptive  provision  hereafter in
effect),  which efforts shall include timely  instructions to its transfer agent
to expedite such transfers of Registrable Securities.

     7.  Shareholder  Information.  The  Company  may  require  each  Holder  of
Registrable  Securities as to which any registration is to be effected  pursuant
to this  Agreement  to furnish the Company in a timely  manner such  information
with respect to such Holder and the distribution of such Registrable  Securities

                                       7
<PAGE>


as the Company may from time to time reasonably  request in writing and as shall
be required by law or by the Commission.

     8. Specific  Enforcement.  All of the parties  acknowledge that the parties
will be irreparably damaged in the event that this Agreement is not specifically
enforced.  Upon a  breach  or  threatened  breach  of the  terms,  covenants  or
conditions  of this  Agreement by any of the parties  hereto,  the other parties
shall,  in  addition  to all other  remedies,  be  entitled  to a  temporary  or
permanent  injunction,  without  showing  any  actual  damage,  or a decree  for
specific performance, in accordance with the provisions of this Agreement.

     9. Section Headings; Definitions; Certain Interpretations.

     (a)  Section  headings  are for  convenience  only and shall not control or
affect the meaning or construction of any provision of this Agreement.

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

     "Affiliate"  shall mean (a) any  person or entity  directly  or  indirectly
controlling,  controlled  by or under  common  control  with  another  person or
entity;  (b) any  person or  entity  owning  or  controlling  10% or more of the
outstanding  voting securities of such other person or entity;  (c) any partner,
officer, director, employee or shareholder of such entity or any parent, spouse,
child, brother, sister or other relative with a relationship (by blood, marriage
or adoption) not more remote than first cousin of any of the  foregoing;  or (d)
any  liquidating  trust,  trustee or other similar person or entity for any such
person or entity.

     "Holder" shall mean (a) the Investors and (b) any other person to which the
rights of registration under this Agreement have been transferred or assigned by
the Investors or their respective transferees.

     "Registrable  Securities"  shall mean (a) shares of Common Stock (including
shares  issued  upon the  conversion  of any Notes or the  exercise of any other
exchange, conversion or similar right), and (b) any securities issued in respect
of any such shares by way of a stock  dividend  or stock split or in  connection
with a  combination  of shares,  recapitalization,  merger or  consolidation  or
reorganization;  provided that,  such  securities  shall cease to be Registrable
Securities  when such securities have been sold to or through a broker or dealer
or underwriter in a public distribution or a public securities transaction.

     (c) Except as otherwise expressly provided in this Agreement, the following
rules of interpretation  apply to this Agreement:  (i) the singular includes the
plural  and the  plural  includes  the  singular,  (ii)  "or" or  "any"  are not
exclusive and "include' and "including"  are not limiting;  (iii) a reference to
any agreement or other contract includes  permitted  supplements and amendments;
(iv) a reference to a law includes any amendment or modification to such law and
any rules or regulations issued thereunder; (v) a reference to a person includes
its successors and assigns;  and (vi) a reference in this Agreement to a Section
is to the Section of this Agreement.

     10. Notices.  All notices,  requests and other  communications to any party
hereunder shall be in writing and sufficient if delivered  personally or sent by
facsimile  (with  confirmation  of receipt) or by registered or certified  mail,
postage prepaid, return receipt requested, addressed as follows:




                                       8


<PAGE>


If to the Company:         Barringer Laboratories, Inc.
                           15000 West 6th Avenue
                           Suite 300
                           Golden, Colorado 80401-5047
                           Attn:    President
                           Facsimile: (303) 277-1689


If to the Investors:
                           ----------------------------
                           ----------------------------
                           ----------------------------
                           ----------------------------
                           Facsimile:
                                      -----------------

                           ----------------------------
                           ----------------------------
                           ----------------------------
                           ----------------------------
                           Facsimile:
                                      -----------------

                           ----------------------------
                           ----------------------------
                           ----------------------------
                           ----------------------------
                           Facsimile:
                                      -----------------

or to such other  address or facsimile  number as the party to whom notice is to
be  given  may have  furnished  to the  other  party in  writing  in  accordance
herewith.  Each such notice,  request or  communication  shall be effective when
received or, if given by mail,  when delivered at the address  specified in this
Section  or on  the  fifth  business  day  following  the  date  on  which  such
communication is posted, whichever occurs first.

     11.  Counterparts.  This  Agreement  may  be  executed  in  any  number  of
counterparts, and each such counterpart hereof shall be deemed to be an original
instrument,  but  all  such  counterparts  together  shall  constitute  but  one
agreement.

     12. Enforceability.  It is the desire and intent of the parties hereto that
the  provisions  of this  Agreement  shall be  enforced  to the  fullest  extent
permissible  under the laws and public policies applied in each  jurisdiction in
which enforcement is sought.  Accordingly,  if any particular  provision of this
Agreement  shall be adjudicated to be invalid or  unenforceable,  such provision
shall be deemed amended to delete  therefrom the portion thus  adjudicated to be
invalid  or  unenforceable,  such  deletion  to apply  only with  respect to the
operation  of such  provision  in the  particular  jurisdiction  in  which  such
adjudication is made.

     13.  GOVERNING  LAW. THIS  AGREEMENT  SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE  (WITHOUT GIVING EFFECT TO ANY
CHOICE OR CONFLICT OF LAWS PROVISIONS).

                                       9
<PAGE>


     14. CONSENT TO JURISDICTION;  WAIVER OF JURY TRIAL. EACH OF THE COMPANY AND
THE HOLDER HEREBY IRREVOCABLY AND UNCONDITIONALLY SUBMITS TO THE JURISDICTION OF
ANY  FEDERAL AND STATE COURT IN  DELAWARE  SITTING IN DELAWARE  AND  IRREVOCABLY
AGREES  THAT ALL  ACTIONS OR  PROCEEDINGS  ARISING  OUT OF OR  RELATING  TO THIS
AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY SHALL BE LITIGATED EXCLUSIVELY
IN SUCH  COURTS.  EACH OF THE COMPANY AND THE HOLDER  AGREES NOT TO COMMENCE ANY
LEGAL  PROCEEDING  RELATED HERETO OR THERETO  EXCEPT IN SUCH COURT.  EACH OF THE
COMPANY  AND THE HOLDER  IRREVOCABLY  WAIVES ANY  OBJECTION  WHICH IT MAY NOW OR
HEREAFTER  HAVE TO THE  LAYING OF THE VENUE OF ANY SUCH  PROCEEDING  IN ANY SUCH
COURT AND HEREBY FURTHER IRREVOCABLY AND  UNCONDITIONALLY  WAIVES AND AGREES NOT
TO PLEAD OR CLAIM IN ANY SUCH COURT  THAT ANY SUCH  ACTION,  SUIT OR  PROCEEDING
BROUGHT IN ANY SUCH COURT HAS BEEN BROUGHT IN AN INCONVENIENT FORUM. EACH OF THE
HOLDER AND THE COMPANY  IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN
ANY  LEGAL  PROCEEDING  ARISING  OUT OF OR  RELATING  TO THIS  AGREEMENT  OR THE
TRANSACTIONS CONTEMPLATED HEREBY.

     15.  Waivers,  Amendments.  No waiver of any right  hereunder  by any party
shall operate as a waiver of any other right,  or of the same right with respect
to any  subsequent  occasion for its  exercise,  or of any right to damages.  No
waiver by any party of any breach of this Agreement  shall be held to constitute
a waiver of any other breach or a continuation of the same breach.  All remedies
provided by this  Agreement  are in addition to all other  remedies  provided by
law.  This  Agreement  may not be amended  except by a writing  executed  by the
Company  and by  Holders  holding  at least 51% of the  Registrable  Securities;
provided that the  provisions of this Section 16 may not be amended  unless such
amendment is executed by each Holder.

     16. Successors and Assigns.  This Agreement shall be binding upon and shall
inure to the benefit of the parties hereto and their  respective  successors and
assigns.  The  Investors'  rights,  including the right to request  registration
pursuant to Section 1, are  assignable to any assignee or transferee of all or a
portion of the Registrable  Securities held by the Investors.  In addition,  and
whether or not any express  assignment  shall have been made,  the provisions of
this  Agreement  which are for the benefit of the parties  hereto other than the
Company  shall also be for the  benefit  of and  enforceable  by any  subsequent
Holder  of any  Registrable  Securities,  subject  to the  provisions  contained
herein.

     17. Termination.  This Agreement shall terminate upon the earliest to occur
of the following events:

     (a)  termination  by mutual  written  agreement  of the  Investors  and the
Company;

     (b) all  Registrable  Securities  have been sold to or  through a broker or
dealer or underwriter in a public distribution or public securities transaction;
or

     (c) the fifth anniversary of the date hereof.

     18. Entire  Agreement.  This Agreement  contains the entire agreement among
the parties with respect to the transactions  contemplated by this Agreement and
supersedes all prior agreements or understandings among the parties.


                                       10
<PAGE>


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

     BARRINGER LABORATORIES, INC.


     By:
         --------------------------
     Name:
     Title:






     INVESTORS:

     ------------------------------         ------------------------------
     ------------------------------         ------------------------------
     Name:                                  Name:
     Title:                                 Title:

     ------------------------------         ------------------------------
     ------------------------------         ------------------------------
     Name:                                  Name:
     Title:                                 Title:




                                       11


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