MINNTECH CORP
S-8, 1999-01-13
SURGICAL & MEDICAL INSTRUMENTS & APPARATUS
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<PAGE>

      As filed with the Securities and Exchange Commission on January 13, 1999
                                                    Registration No. 333- 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------

                         SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, D. C.  20549

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

                                      FORM S-8

                               REGISTRATION STATEMENT
                                       UNDER
                             THE SECURITIES ACT OF 1933

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

                                MINNTECH CORPORATION
               (Exact name of Registrant as specified in its charter)


                 MINNESOTA                                    41-1229121
      (State or other jurisdiction of                      (I.R.S. Employer
       incorporation or organization)                    Identification No.)

         14605 - 28TH AVENUE NORTH                              55447
           MINNEAPOLIS, MINNESOTA                             (Zip Code)
  (Address of principal executive offices)


                                MINNTECH CORPORATION
                               1998 STOCK OPTION PLAN
                              (Full title of the plan)

                                 Barbara A. Wrigley
                    Vice President, General Counsel and Secretary
                              14605 - 28th Avenue North
                            Minneapolis, Minnesota  55447
                       (Name and address of agent for service)

 Telephone number, including area code, of agent for service:  (612) 553-3300

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

                           CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------
                                                          Proposed
                                       Proposed            maximum
   Title of           Amount            maximum           aggregate        Amount of
 securities to        to be         offering price        offering        registration
 be registered    registered (1)   per share (1) (2)    price (1) (2)         fee
- --------------------------------------------------------------------------------------
<S>               <C>              <C>                  <C>               <C>
 Common Stock,      1,000,000
$.05 par value        shares           $14.82           $14,820,000       $4,120
- --------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------
</TABLE>

(1)  The Registration Statement relates to 1,000,000 shares of Common Stock to
     be offered pursuant to the 1998 Stock Option Plan.
(2)  Estimated solely for the purpose of the registration fee pursuant to
     Rule 457(h)(1) based on the average of the high and low sales prices per
     share of the Registrant's Common Stock on January 11, 1999 as reported on
     the Nasdaq National Market.

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

<PAGE>

                                MINNTECH CORPORATION

                                      PART II

                 INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE.

     The following documents of Minntech Corporation (the "Company") filed 
with the Securities and Exchange Commission (the "Commission") pursuant to 
the Securities Exchange Act of 1934, as amended (the "Exchange Act") (File 
No. 0-11278), are, as of their respective dates, incorporated by reference 
and made a part hereof:

          (1)  The Annual Report on Form 10-K of the Company for the fiscal 
     year ended March 31, 1998 filed pursuant to Section 15(d) of the 
     Exchange Act (File No. 0-11278).

          (2)  All other reports filed pursuant to Section 13(a) or 15(d) of 
     the Exchange Act since the end of the fiscal year covered by the Annual 
     Report referred to in (1) above (File No. 0-11278).

          (3)  The description of the Company's Common Stock which is 
     contained in the Registration Statement on Form 8-A (Registration No. 
     0-11278) filed November 1, 1983, (and declared effective January 1, 
     1984) under the Exchange Act and all amendments and reports filed for 
     the purpose of updating such description.

     All reports and other documents subsequently filed by the Company 
pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent 
to the date of this Registration Statement and prior to the filing of a 
post-effective amendment which indicates that all of the shares of Common 
Stock offered have been sold or which deregisters all shares of the Common 
Stock then remaining unsold shall be deemed to be incorporated by reference 
in and a part of this Registration Statement from the date of filing of such 
documents.

     Any statement contained in a document incorporated, or deemed to be 
incorporated, by reference herein shall be deemed to be modified or 
superseded for purposes of this Registration Statement to the extent that a 
statement contained herein or incorporated herein by reference or in any 
other subsequently filed document that also is or is deemed to be 
incorporated by reference herein modifies or supersedes such statement.  Any 
statement so modified or superseded shall not be deemed, except as so 
modified or superseded, to constitute a part of this Registration Statement.

ITEM 4.  DESCRIPTION OF SECURITIES.

     Not Applicable.

ITEM 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL.

     Not Applicable.

ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     Under Section 7.01 of the Company's By-Laws, the Company indemnifies its 
directors and officers and advances litigation expenses to the fullest extent 
required or permitted by Minnesota Statutes Section 302A.521.  Section 
302A.521 requires the Company to indemnify a person made or threatened to be 
made a party to a proceeding, by reason of the former or present official 
capacity of the person with respect to the Company, against judgments, 
penalties, fines, including without limitation, excise taxes assessed against 
the person with respect to an employee benefit plan, settlements, and 
reasonable expenses, including attorneys' fees and disbursements, if, with 
respect to the acts or omissions of the person complained of in the 
proceeding, such person (1) has not been indemnified by another organization 
or employee benefit plan for the same judgments, penalties, fines, including 
without limitation, excise taxes assessed against the person with respect to 
an employee benefit plan, settlements, and reasonable expenses, including 
attorneys' fees and disbursements, incurred by the person in 

                                     II-1
<PAGE>

connection with the proceeding with respect to the same acts or omissions; 
(2) acted in good faith; (3) received no improper personal benefit, and 
statutory procedure has been followed in the case of any conflict of interest 
by a director; (4) in the case of a criminal proceeding, had no reasonable 
cause to believe the conduct was unlawful; and (5) in the case of acts or 
omissions occurring in the person's performance in the official capacity of 
director or, for a person not a director, in the official capacity of 
officer, committee member, employee or agent, reasonably believed that the 
conduct was in the best interests of the Company, or in the case of 
performance by a director, officer, employee or agent of the Company as a 
director, officer, partner, trustee, employee or agent of another 
organization or employee benefit plan, reasonably believed that the conduct 
was not opposed to the best interests of the Company.  In addition, Section 
302A.521, subd. 3, requires payment by the Company upon written request, of 
reasonable expenses in advance of final disposition in certain instances.  A 
decision as to required indemnification is made by a majority of the 
disinterested Board of Directors present at a meeting at which a 
disinterested quorum is present, or by a designated committee of 
disinterested directors, by special legal counsel, by the disinterested 
shareholders, or by a court.

     The Company also maintains a director and officer insurance policy to 
cover the Company, its directors and its officers against certain liabilities.

ITEM 7.  EXEMPTION FROM REGISTRATION CLAIMED.

     Not Applicable.

ITEM 8.  EXHIBITS.

<TABLE>
<CAPTION>
    Exhibit                           Description
    -------                           -----------
<S>            <C>
     4.1       Articles of Incorporation, as amended(1)

     4.2       Restated By-Laws(2)

     4.3       Amendment of By-Laws in November 1998

     4.4       Form of Specimen of Common Stock Certificate(3)

     5         Opinion of Faegre & Benson LLP

     10        Minntech Corporation Amended 1998 Stock Option Plan

     23.1      Consent of Faegre & Benson LLP (contained in Exhibit 5 to this
               Registration Statement)

     23.2      Consent of PricewaterhouseCoopers LLP

     24        Powers of Attorney
</TABLE>

- ------------------------
(1)  Incorporated by reference to the specified exhibit filed as part of the
     Company's Annual Report on Form 10-K for the year ended March 31, 1988,
     File No. 0-11278.
(2)  Incorporated by reference to the specified exhibit filed as part of the
     Company's Quarterly Report on Form 10-Q for the quarter ended September 30,
     1995, File No. 0-11278.
(3)  Incorporated by reference to the specified exhibit filed as part of the
     Company's Annual Report on Form 10-K for the year ended March 31, 1993,
     File No. 0-11278.

                                     II-2
<PAGE>

ITEM 9.  UNDERTAKINGS.

A.   The Company hereby undertakes:

          (1)  To file, during any period in which offers or sales are being
     made, a post-effective amendment to this Registration Statement;

               (i)    To include any prospectus required by Section 10(a)(3) 
          of the Securities Act of 1933; 

               (ii)   To reflect in the prospectus any facts or events 
          arising after the effective date of the Registration Statement (or 
          the most recent post-effective amendment thereof) which, 
          individually or in the aggregate, represent a fundamental change in 
          the information set forth in the Registration Statement.  
          Notwithstanding the foregoing, any increase or decrease in volume 
          of securities offered (if the total dollar value of securities 
          offered would not exceed that which was registered) and any 
          deviation from the low or high end of the estimated maximum 
          offering range may be reflected in the form of prospectus filed 
          with the Securities and Exchange Commission pursuant to Rule 424(b) 
          if, in the aggregate, the changes in volume and price represent no 
          more than a twenty percent change in the maximum aggregate offering 
          price set forth in the "Calculation of Registration Fee" table in 
          the effective Registration Statement; and 

               (iii)  To include any material information with respect to the 
          plan of distribution not previously disclosed in the Registration 
          Statement or any material change to such information in the 
          Registration Statement;

PROVIDED, HOWEVER, that paragraphs (A)(1)(i) and (A)(1)(ii) do not apply if 
the Registration Statement is on Form S-3 or Form S-8, and the information 
required to be included in a post-effective amendment by those paragraphs is 
contained in periodic reports filed with or furnished to the Securities and 
Exchange Commission by the Company pursuant to Section 13 or Section 15(d) of 
the Securities Exchange Act of 1934 that are incorporated by reference in the 
Registration Statement.

          (2)  That, for the purpose of determining any liability under the 
     Securities Act of 1933, each post-effective amendment shall be deemed to 
     be a new registration statement relating to the securities offered 
     therein, and the offering of such securities at that time shall be 
     deemed to be the initial bona fide offering thereof.

          (3)  To remove from registration by means of a post-effective 
     amendment any of the securities being registered which remain unsold at 
     the termination of the offering.

     B.   The Company hereby undertakes that, for purposes of determining any 
liability under the Securities Act of 1933, each filing of the Company's 
annual report pursuant to Section 13(a) or Section 15(d) of the Securities 
Exchange Act of 1934 (and, where applicable, each filing of an employee 
benefit plan's annual report pursuant to Section 15(d) of the Securities  
Exchange Act of 1934) that is incorporated by reference in the Registration 
Statement shall be deemed to be a new registration statement relating to the 
securities offered herein, and the offering of such securities at that time 
shall be deemed to be the initial bona fide offering thereof.

     C.   Insofar as indemnification for liabilities arising under the 
Securities Act of 1933 may be permitted to directors, officers and 
controlling persons of the Company pursuant to the foregoing provisions, or 
otherwise, the Company has been advised that in the opinion of the Securities 
and Exchange Commission such indemnification is against public policy as 
expressed in the Securities Act of 1933 and is, therefore, unenforceable.  In 
the event that a claim for indemnification against such liabilities (other 
than the payment by the Company of expenses incurred or paid by a director, 
officer or controlling person of the Company in the successful defense of any 
action, suit or proceeding) is asserted by such director, officer or 
controlling person in connection with the securities being registered, the 
Company will, unless in the opinion of its counsel the matter has been 
settled by controlling precedent, submit to a court of appropriate 
jurisdiction the question whether such indemnification by it is against 
public policy as expressed in the Securities Act of 1933 and will be governed 
by the final adjudication of such issue.

                                     II-3
<PAGE>

                                  SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, as amended, 
the Registrant certifies that it has reasonable grounds to believe that it 
meets all of the requirements for filing on Form S-8 and has duly caused this 
Registration Statement to be signed on its behalf by the undersigned, 
thereunto duly authorized, in the City of Minneapolis, State of Minnesota, on 
January 13, 1999.

                              MINNTECH CORPORATION


                              By   /s/ Thomas J. McGoldrick
                                   ------------------------------------------
                                   Thomas J. McGoldrick
                                   President and Chief Executive Officer


     Pursuant to the requirements of the Securities Act of 1933, this 
Registration Statement has been signed by the following persons in the 
capacities indicated on January 13, 1999.

<TABLE>
<CAPTION>
Signature                          Title
- ---------                          -----
<S>                                <C>

/s/ Thomas J. McGoldrick 
- ------------------------------     President and Chief Executive Officer 
Thomas J. McGoldrick               (Principal Executive Officer)

/s/ Jules L. Fisher 
- ------------------------------     Vice President and Chief Financial Officer
Jules L. Fisher                    (Principal Financial and Accounting Officer)

Norman Dann*                       Director

George Heenan*                     Director

Amos Heilicher*                    Director

William Hope*                      Director

Thomas J. McGoldrick*              Director

Fred L. Shapiro, M.D.*             Director

Donald H. Soukup*                  Director
</TABLE>

*    Barbara A. Wrigley, by signing her name hereto, does hereby sign this 
document on behalf of each of the above named directors of the Registrant 
pursuant to powers of attorney duly executed by each person.


                              By   /s/ Barbara A. Wrigley
                                   ------------------------------------------
                                   Barbara A. Wrigley, Attorney in Fact


                                     II-4
<PAGE>

                                 INDEX TO EXHIBITS

<TABLE>
<CAPTION>
                                                                             Method
Exhibit                          Description                                of Filing
- -------                          -----------                                ---------
<S>        <C>                                                         <C>
                                                                       Incorporated by
 4.1       Articles of Incorporation, as amended(1)..................  Reference

                                                                       Incorporated by
 4.2       Restated By-Laws(2).......................................  Reference

 4.3       Amendment of By-Laws in November 1998.....................  Filed Electronically

                                                                       Incorporated by
 4.4       Form of Specimen of Common Stock Certificate(3)...........  Reference

 5         Opinion of Faegre & Benson LLP............................  Filed Electronically

 10        Minntech Corporation Amended 1998 Stock Option Plan.......  Filed Electronically

 23.1      Consent of Faegre & Benson LLP 
           (contained in its opinion filed as Exhibit 5 to this
           Registration Statement)

 23.2      Consent of PricewaterhouseCoopers LLP.....................  Filed Electronically

 24        Powers of Attorney........................................  Filed Electronically
</TABLE>

- ------------------------
(1)  Incorporated by reference to the specified exhibit filed as part of the
     Company's Annual Report on Form 10-K for the year ended March 31, 1988,
     File No. 0-11278.
(2)  Incorporated by reference to the specified exhibit filed as a part of the
     Company's Quarterly Report on Form 10-Q for the quarter ended September 30,
     1995, File No. 0-11278.
(3)  Incorporated by reference to the specified exhibit filed as part of the
     Company's Annual Report on Form 10-K for the year ended March 31, 1993,
     File No. 0-11278.

                                     II-5

<PAGE>

                                                                    EXHIBIT 4.3

                                MINNTECH CORPORATION
                           Director Resolutions Adopting
                             By-Law Amendment Regarding
                            Advance-Notice Requirements

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

     Resolved that Sections 2.07 and 3.03 of the By-Laws of the corporation 
are hereby amended in their entirety to read as follows:

     Section 2.07.  ADVANCE NOTICE OF BUSINESS TO BE CONDUCTED.  At any 
regular or special meeting of shareholders of the corporation, only such 
business (other than the nomination and election of directors, which shall be 
subject to Section 3.03 of the By-Laws) may be conducted as shall be 
appropriate for consideration at the meeting of shareholders and as shall 
have been brought before the meeting (i) by or at the direction of the Board 
of Directors, or (ii) by any shareholder of the corporation entitled to vote 
at the meeting who complies with the notice procedures set forth in this 
Section 2.07.

          (a)  TIMING OF NOTICE.  For such business to be properly brought 
     before any regular or special meeting by a shareholder, the shareholder 
     must have given timely notice thereof in writing to the Secretary of the 
     corporation.  To be timely, a shareholder's notice of any such business 
     to be conducted at an annual meeting must be delivered to the Secretary 
     of the corporation, or mailed and received at the principal executive 
     office of the corporation, not less than 90 days before the first 
     anniversary of the date of the preceding year's annual meeting of 
     shareholders.  If, however, the date of the annual meeting of 
     shareholders is more than 30 days before or after such anniversary date, 
     notice by a shareholder shall be timely only if so delivered or so 
     mailed and received not less than 90 days before such annual meeting or, 
     if later, within 10 days after the first public announcement of the date 
     of such annual meeting.  If a special meeting of shareholders of the 
     corporation is called in accordance with Section 2.03 for any purpose 
     other than electing directors to the Board of Directors or if a regular 
     meeting other than an annual meeting is held, for a shareholder's notice 
     of any such business to be timely it must be delivered to the Secretary 
     of the corporation, or mailed and received at the principal executive 
     office of the corporation, not less than 90 days before such special 
     meeting or such regular meeting or, if later, within 10 days after the 
     first public announcement of the date of such special meeting or such 
     regular meeting.  Except to the extent otherwise required by law, the 
     adjournment of a regular or special meeting of shareholders shall not 
     commence a new time period for the giving of a shareholder's notice as 
     required above.

          (b)  CONTENT OF NOTICE.  A shareholder's notice to the corporation 
     shall set forth as to each matter the shareholder proposes to bring 
     before the regular or special meeting (w) a brief description of the 
     business desired to be brought before the meeting and the reasons for 
     conducting such business at the meeting, (x) the name and address, as 
     they appear on the corporation's books, of the shareholder proposing 
     such business, (y) the class or series (if any) and number of shares of 
     the corporation that are beneficially owned by the shareholder, and (z) 
     any material interest of the shareholder in such business.

          (c)  CONSEQUENCES OF FAILURE TO GIVE TIMELY NOTICE.  
     Notwithstanding anything in these By-Laws to the contrary, no business 
     (other than the nomination and election of directors) shall be conducted 
     at any regular or special meeting except in accordance with the 
     procedures set forth in this Section and, as an additional limitation, 
     the business transacted at any special meeting shall be limited to the 
     purposes stated in the notice of the special meeting pursuant to 
     Sections 2.03 and 2.04 of the Bylaws.  The Chairman of the meeting 
     shall, if the facts warrant, determine and declare to the meeting that 
     business was not properly brought before the meeting in accordance with 
     the provisions of this Section 2.07 and, if the Chairman should so 
     determine, the Chairman shall so declare to the meeting, and any such 
     business not 

<PAGE>

     properly brought before the meeting shall not be transacted.  Nothing in 
     this Section 2.07 shall be deemed to preclude discussion by any 
     shareholder of any business properly brought before the meeting in 
     accordance with these Bylaws.

          (d)  PUBLIC ANNOUNCEMENT.  For purposes of this Section 2.07 and 
     Section 3.03 of the By-Laws, "public announcement" means disclosure (i) 
     when made in a press release reported by the Dow Jones News Service, 
     Associated Press, or comparable national news service, (ii) when filed 
     in a document publicly filed by the corporation with the Securities and 
     Exchange Commission pursuant to Section 13, 14, or 15(d) of the 
     Securities Exchange Act of 1934, as amended, or (iii) when mailed as the 
     notice of the meeting pursuant to Sections 2.03 and 2.04 of the By-Laws.

     Section 3.03   NOTICE OF NOMINATIONS OF THE DIRECTORS.  Only persons who 
are nominated in accordance with the procedures set forth in this Section 
3.03 shall be eligible for election as directors at shareholder meetings. 
Nominations of persons for election to the Board of Directors may be made at 
a meeting of shareholders (i) by or at the direction of the Board of 
Directors or (ii) by any shareholder of the corporation entitled to vote for 
the election of directors at the meeting who complies with the notice 
procedures set forth in this Section 3.03.

          (a)  TIMING OF NOTICE.  Nominations by shareholders shall be made 
     pursuant to timely notice in writing to the Secretary of the 
     corporation. To be timely, a shareholder's notice of nominations to be 
     made at an annual meeting of shareholders must be delivered to the 
     Secretary of the corporation, or mailed and received at the principal 
     executive office of the corporation, not less than 90 days before the 
     first anniversary of the date of the preceding year's annual meeting of 
     shareholders.  If, however, the date of the annual meeting of 
     shareholders is more than 30 days before or after such anniversary date, 
     notice by a shareholder shall be timely only if so delivered or so 
     mailed and received not less than 90 days before such annual meeting or, 
     if later, within 10 days after the first public announcement of the date 
     of such annual meeting.  If a special meeting of shareholders of the 
     corporation is called in accordance with Section 2.03 for the purpose of 
     electing one or more directors to the Board of Directors or if a regular 
     meeting other than an annual meeting is held, for a shareholder's notice 
     of nominations to be timely it must be delivered to the Secretary of the 
     corporation, or mailed and received at the principal executive office of 
     the corporation, not less than 90 days before such special meeting or 
     such regular meeting or, if later, within 10 days after the first public 
     announcement of the date of such special meeting or such regular 
     meeting.  Except to the extent otherwise required by law, the 
     adjournment of a regular or special meeting of shareholders shall not 
     commence a new time period for the giving of a shareholder's notice as 
     described above.

          (b)  CONTENT OF NOTICE.  A shareholder's notice of nomination for a 
     regular or special meeting of shareholders shall set forth (x) as to 
     each person whom the shareholder proposes to nominate for election or 
     re-election as a director:  (i) such person's name, (ii) all information 
     relating to such person that is required to be disclosed in 
     solicitations of proxies for election of directors in an election 
     contest, or is otherwise required, pursuant to Regulation 14A under the 
     Securities Exchange Act of 1934, as amended, including Rule 14a-11 
     thereof, and (iii) such person's written consent to being named in the 
     proxy statement as a nominee and to serving as a director if elected; 
     and (y) as to the shareholder giving the notice:  (i) the name and 
     address, as they appear on the corporation's books, of such shareholder, 
     (ii) the class or series (if any) and number of shares of the 
     corporation that are beneficially owned by such shareholder and (iii) a 
     representation that the shareholder is a holder of record of shares of 
     the corporation entitled to vote for the election of directors and 
     intends to appear in person or by proxy at the meeting to nominate the 
     person or persons specified in the notice.  At the request of the Board 
     of Directors, any person nominated by the Board of Directors for 
     election as a director shall furnish to the Secretary of the 

<PAGE>

     corporation the information required to be set forth in a shareholder's 
     notice of nomination that pertains to a nominee.

          (c)  CONSEQUENCES OF FAILURE TO GIVE TIMELY NOTICE.  
     Notwithstanding anything in these By-Laws to the contrary, no person 
     shall be eligible for election as a director of the corporation unless 
     nominated in accordance with the procedures set forth in this Section 
     3.03.  The Chairman of the meeting shall, if the facts warrant, 
     determine and declare to the meeting that a nomination was not made in 
     accordance with the procedures prescribed in this Section 3.03 and, if 
     the Chairman should so determine, the Chairman shall so declare to the 
     meeting, and the defective nomination shall be disregarded.


<PAGE>

                                                                      EXHIBIT 5

                              FAEGRE & BENSON LLP
                              2200 Norwest Center
                            90 South Seventh Street
                          Minneapolis, Minnesota 55402
                                 612-336-3000



                                       January 13, 1999


Board of Directors
Minntech Corporation
14605 - 28th Avenue North
Minneapolis, Minnesota 55447


     In connection with the Registration Statement on Form S-8 under the 
Securities Act of 1933, as amended (the "Registration Statement"), relating 
to the offering of up to 1,000,000 shares of Common Stock, par value $.05 per 
share (the "Shares"), of Minntech Corporation, a Minnesota corporation (the 
"Company"), pursuant to the 1998 Stock Option Plan, we have examined such 
corporate records and other documents, including the Registration Statement, 
and have reviewed such matters of law as we have deemed relevant hereto, and, 
based upon such examination and review, it is our opinion that all necessary 
corporate action on the part of the Company has been taken to authorize the 
issuance and sale of the Shares and that, when issued and sold as 
contemplated in the Registration Statement, the Shares will be legally and 
validly issued, fully paid and nonassessable.

     We consent to the filing of this opinion as an exhibit to the 
Registration Statement.

                                       Very truly yours,



                                       FAEGRE & BENSON LLP

<PAGE>

                                                                    EXHIBIT 10

                               MINNTECH CORPORATION 
                               1998 STOCK OPTION PLAN

                           EFFECTIVE AS OF MARCH 24, 1998
                      INCLUDING SEPTEMBER 30, 1998 AMENDMENTS


          1.   PURPOSE.  The purpose of this 1998 Stock Option Plan (the 
"Plan") is to promote the interests of Minntech Corporation, a Minnesota 
corporation (the "Company"), and its shareholders by providing personnel of 
the Company and any subsidiaries thereof with an opportunity to acquire a 
proprietary interest in the Company and thereby develop a stronger incentive 
to put forth maximum effort for the continued success and growth of the 
Company.  In addition, the opportunity to acquire a proprietary interest in 
the Company will aid in attracting and retaining personnel of outstanding 
ability.

          2.   ADMINISTRATION.

          (a)  GENERAL.  This Plan shall be administered by a committee of 
     two or more directors of the Company (the "Committee") appointed by the 
     Company's Board of Directors (the "Board").  If the Board has not 
     appointed a committee to administer this Plan, then the Board shall 
     constitute the Committee.  The Committee shall have the power, subject 
     to the limitations contained in this Plan, to fix any terms and 
     conditions for the grant or exercise of any option under this Plan.  No 
     director shall serve as a member of the Committee unless such director 
     shall be (i) a "non-employee director" as that term is defined in Rule 
     16b-3 promulgated under the Securities Exchange Act of 1934, as amended 
     (the "Exchange Act"), or any successor statute or regulation 
     comprehending the same subject matter and (ii) an "outside director" 
     under Section 162(m) of the Internal Revenue Code of 1986, as amended 
     (the "Code"), and the regulations issued thereunder.  A majority of the 
     members of the Committee shall constitute a quorum for any meeting of 
     the Committee, and the acts of a majority of the members present at any 
     meeting at which a quorum is present or the acts unanimously approved in 
     writing by all members of the Committee shall be the acts of the 
     Committee.  Subject to the provisions of this Plan, the Committee may 
     from time to time adopt such rules for the administration of this Plan 
     as it deems appropriate.  The decision of the Committee on any matter 
     affecting this Plan or the rights and obligations arising under this 
     Plan or any option granted hereunder, shall be final, conclusive and 
     binding upon all persons, including without limitation the Company, 
     shareholders and optionees.

          (b)  INDEMNIFICATION. To the full extent permitted by law, (i) no 
     member of the Committee or person to whom authority under this Plan is 
     delegated shall be liable for any action or determination taken or made 
     in good faith with respect to this Plan or any option granted hereunder 
     and (ii) the members of the Committee and each person to whom authority 
     under this Plan is delegated shall be entitled to indemnification by the 
     Company against and from any loss incurred by such member or person by 
     reason of any such actions and determinations.

<PAGE>

          (c)  DELEGATION OF AUTHORITY.  The Committee may delegate all or 
     any part of its authority under this Plan to the Chief Executive Officer 
     of the Company for purposes of granting and administering options 
     granted to persons other than persons who are then subject to the 
     reporting requirements of Section 16 of the Exchange Act ("Section 16 
     Individuals"). The Chief Executive Officer of the Company may, in turn, 
     delegate such authority to such other officer of the Company as the 
     Chief Executive Officer may determine.

          (d)  ACTION BY BOARD.  Notwithstanding paragraph 2(a), above, any 
     grant of options hereunder to any director of the Company who is not an 
     employee of the Company, and any action taken by the Company with 
     respect to any such option, including any amendment thereto, and any 
     acceleration of the vesting of any option granted to or held by a 
     director who is not an employee of the Company, any extension of the 
     time within which any such option may be exercised, any determination 
     pursuant to paragraph 9 relating to the payment of the purchase price of 
     Shares (as defined in paragraph 3 below) subject to any such option, or 
     any action pursuant to paragraph 10 relating to the payment of 
     withholding taxes, if any, through the use of Shares with respect to any 
     such option shall be subject to prior approval by the Board.

          3.   SHARES.  The shares that may be made subject to options 
granted under this Plan shall be authorized and unissued shares of Common 
Stock of the Company, par value $.05 per share ("Shares," and each 
individually a "Share"), and they shall not exceed 1,000,000 Shares in the 
aggregate, subject to adjustment as provided in paragraph 14, below, except 
that, if any option lapses or terminates for any reason before such option 
has been completely exercised, the Shares covered by the unexercised portion 
of such option may again be made subject to options granted under this Plan.  
Commencing April 1, 1998, no option may be granted under this Plan in any 
fiscal year of the Company if following such grant the number of Shares 
purchasable pursuant to options granted under this Plan in such fiscal year 
of the Company (excluding any such options that have terminated or lapsed) 
would exceed 3% of the total number of outstanding Shares of the Company as 
of the date of such grant.

          4.   ELIGIBLE PARTICIPANTS. Stock options may be granted under this 
Plan to any part-time or full-time employee of the Company, or any parent or 
subsidiary thereof, including any such person who is also an officer or 
director of the Company or any parent or subsidiary thereof.  Non-statutory 
stock options (as defined in paragraph 5(a) below) also may be granted to (i) 
any director of the Company who is not an employee of the Company or any 
parent or subsidiary thereof, (ii) other individuals or entities who are not 
employees but who provide services to the Company or a parent or subsidiary 
thereof in the capacity of an advisor or consultant, and (iii) any individual 
or entity that the Company desires to induce to become an employee, advisor 
or consultant, but any such grant shall be contingent upon such individual or 
entity becoming employed by the Company or a parent or subsidiary thereof.  
References herein to "employment" and similar terms (except "employee") shall 
include the providing of services in the capacity of an advisor or consultant 
or as a director.  The employees and other individuals and entities to whom 
options may be granted pursuant to this paragraph 4 are referred to herein as 
"Eligible Participants."

<PAGE>

          5.   TERMS AND CONDITIONS OF OPTIONS.

          (a)  GENERAL.  Subject to the terms and conditions of this Plan, 
     the Committee may, from time to time during the term of this Plan, grant 
     to such Eligible Participants as the Committee may determine options to 
     purchase such number of Shares of the Company on such terms and 
     conditions as the Committee may determine.  In determining the Eligible 
     Participants to whom options shall be granted and the number of Shares 
     to be covered by each option, the Committee may take into account the 
     nature of the services rendered by the respective Eligible Participants, 
     their present and potential contributions to the success of the Company, 
     and such other factors as the Committee in its sole discretion may deem 
     relevant.  The date and time of approval by the Committee of the 
     granting of an option shall be considered the date and the time of the 
     grant of such option.  The Committee in its sole discretion may 
     designate whether an option granted to an employee is to be considered 
     an "incentive stock option" (as that term is defined in Section 422 of 
     the Code, or any amendment thereto) or a non-statutory stock option (an 
     option granted under this Plan that is not intended to be an "incentive 
     stock option").  The Committee may grant both incentive stock options 
     and non-statutory stock options to the same employee.  However, if an 
     incentive stock option and a non-statutory stock option are awarded 
     simultaneously, such options shall be deemed to have been awarded in 
     separate grants, shall be clearly identified, and in no event shall the 
     exercise of one such option affect the right to exercise the other.  To 
     the extent that the aggregate Fair Market Value (as defined in paragraph 
     8 below) of Shares with respect to which incentive stock options are 
     exercisable for the first time by any employee during any calendar year 
     (under all plans of the Company and its parent and subsidiary 
     corporations) exceeds $100,000, such options shall be treated as 
     non-statutory stock options.  The maximum number of Shares subject to 
     options that may be granted to any one Eligible Participant under the 
     Plan in any fiscal year of the Company may not exceed 200,000 Shares 
     (subject to adjustment pursuant to paragraph 14 hereof). 

          (b)  PURCHASE PRICE.  The purchase price of each Share subject to 
     an option granted pursuant to this paragraph 5 shall be not less than 
     100% of the Fair Market Value of a Share on the date of grant; provided 
     that if an incentive stock option is granted to an employee who owns, or 
     is deemed under Section 424(d) of the Code to own, at the time such 
     option is granted, stock of the Company (or of any parent or subsidiary 
     of the Company) possessing more than 10% of the total combined voting 
     power of all classes of stock therein (a "10% Shareholder"), such 
     purchase price shall be no less than 110% of the Fair Market Value of a 
     Share on the date of grant. 

          (c)  VESTING.  Each option agreement provided for in paragraph 7 
     shall specify when each option granted under this Plan shall become 
     exercisable with respect to the Shares covered by the option.  
     Notwithstanding the provisions of any option agreement provided for in 
     paragraph 7, the Committee may at any time, in its sole discretion, 
     declare that any option granted under this Plan shall be immediately 
     exercisable in whole or in part.

<PAGE>

          (d)  TERMINATION.  Each option granted pursuant to this paragraph 5 
     shall expire, and all rights to purchase Shares thereunder shall 
     terminate, on the earliest of:

               (i)    ten years after the date such option is granted (or in 
          the case of an incentive stock option granted to a 10% Shareholder, 
          five years after the date such option is granted) or on such date 
          prior thereto as may be fixed by the Committee on or before the 
          date such option is granted;

               (ii)   the expiration of the period after the termination of 
          the optionee's employment within which the option is exercisable as 
          specified in paragraph 11(b) (provided that the Committee may, in 
          any option agreement provided for in paragraph 7 or by Committee 
          action with respect to any outstanding option, extend the periods 
          specified in paragraph 11(b)); or

               (iii)  the date, if any, fixed for cancellation pursuant to 
          paragraph 12(c) or 13 below.

          (e)  REPRICING.  No option shall be granted under this Plan in 
     complete or partial replacement of or substitution for an outstanding 
     option (an option that has not expired in accordance with its terms) 
     that was granted under this Plan or any other plan of the Company if the 
     exercise price of such replacing or substitution new option is less than 
     the exercise price of the option being replaced or for which such new 
     option is being substituted.  No option that is outstanding under this 
     Plan shall be amended so as to reduce the exercise price of such option.

          6.   AUTOMATIC GRANTS TO NON-EMPLOYEE DIRECTORS.  Each director of 
the Company who is not and has never been an employee of the Company and who 
(i) is serving an unexpired term as a director of the Company as of the date 
of the last regularly scheduled meeting of the Board during any fiscal year 
of the Company and (ii) at the time of such meeting has served as a director 
for at least six months of the twelve month period preceding the date of such 
meeting, shall as of the date of such meeting automatically be granted an 
option to purchase 7,030 Shares at an option price per share equal to 100% of 
the Fair Market Value of a Share on such date.  All such options shall be 
non-statutory stock options and shall be subject to the same terms and 
conditions as are then in effect with respect to non-statutory stock options 
granted to officers and employees of the Company, except that (x) the term of 
each such option shall be ten years, (y) each such option shall remain in 
effect for its full ten year term and shall not terminate or expire following 
the death, disability or retirement of the non-employee director and (z) each 
such option shall become exercisable as to all or any part of the Shares 
subject thereto six months after the date the option is granted.  Subject to 
the foregoing, all provisions of this Plan not inconsistent with the 
foregoing shall apply to options granted to non-employee directors pursuant 
to this paragraph 6.  The maximum number of Shares as to which options may be 
granted to any non-employee director under this paragraph 6 shall be 140,600 
Shares. 

<PAGE>

          7.   OPTION AGREEMENTS.  All options granted under this Plan shall 
be evidenced by a written agreement in such form or forms as the Committee 
may from time to time determine, which agreement shall, among other things, 
designate whether the options being granted thereunder are non-statutory 
stock options or incentive stock options. 

          8.   FAIR MARKET VALUE.  For purposes of this Plan, the "Fair 
Market Value" of a Share at a specified date shall, unless otherwise 
expressly provided in this Plan, mean the closing sale price of a Share on 
the date immediately preceding such date or, if no sale of Shares shall have 
occurred on that date, on the next preceding day on which a sale of Shares 
occurred, on the Composite Tape for New York Stock Exchange listed shares or, 
if Shares are not quoted on the Composite Tape for New York Stock Exchange 
listed shares, on the Nasdaq National Market or any similar system then in 
use or, if Shares are not included in the Nasdaq National Market or any 
similar system then in use, the mean between the closing "bid" and the 
closing "asked" quotation of a Share on the date immediately preceding the 
date as of which such Fair Market Value is being determined, or, if no 
closing bid or asked quotation is made on that date, on the next preceding 
day on which a quotation is made, on the Nasdaq SmallCap Market or any 
similar system then in use, provided that if the Shares in question are not 
quoted on any such system, Fair Market Value shall be what the Committee 
determines in good faith to be 100% of the fair market value of a Share as of 
the date in question.  Notwithstanding anything stated in this paragraph 8, 
if the applicable securities exchange or system has closed for the day by the 
time the determination is being made, all references in this paragraph to the 
date immediately preceding the date in question shall be deemed to be 
references to the date in question.

          9.   MANNER OF EXERCISE OF OPTIONS.  A person entitled to exercise 
an option granted under this Plan may, subject to its terms and conditions 
and the terms and conditions of this Plan, exercise it in whole at any time, 
or in part from time to time, by delivery to the Company at its principal 
executive office of written notice of exercise, specifying the number of 
Shares with respect to which the option is being exercised.  The purchase 
price of the Shares with respect to which an option is being exercised shall 
be payable in full at the time of exercise, provided that, to the extent 
permitted by law, the holder of an option may simultaneously exercise an 
option and sell all or a portion of the Shares thereby acquired pursuant to a 
brokerage or similar relationship and use the proceeds from such sale to pay 
the purchase price of such Shares.  The purchase price of each Share on the 
exercise of any option shall be paid in full in cash (including check, bank 
draft or money order) or, at the discretion of the person exercising the 
option, by tender or delivery to the Company of unencumbered Shares having an 
aggregate Fair Market Value on the date of exercise equal to the amount of 
the purchase price being paid through such tender or delivery of Shares, or 
by a combination of cash and such Shares; provided, however, that no person 
shall be permitted to pay any portion of the purchase price with Shares if 
the Committee, in its sole discretion, determines that payment in such manner 
is undesirable.  The granting of an option to a person shall give such person 
no rights as a shareholder except as to Shares issued to such person.

          10.  TAX WITHHOLDING.  Delivery of Shares pursuant to a stock award 
or upon exercise of any non-statutory stock option granted under this Plan 
shall be subject to any required withholding taxes.  A person receiving a 
stock award or exercising a non-statutory stock option may, as a condition 

<PAGE>

precedent to receiving the Shares, be required to pay the Company a cash 
amount equal to the amount of any required withholdings.  In lieu of all or 
any part of such a cash payment, the Committee may, but shall not be required 
to, provide in any option agreement provided for in paragraph 7 (or provide 
by Committee action with respect to any outstanding option) that a person 
exercising an option may cover all or any part of the required withholdings, 
and any additional withholdings up to the amount needed to cover the 
individual's full FICA and federal, state and local income tax liability with 
respect to income arising from the exercise of the option, through the tender 
or delivery to the Company of unencumbered Shares having an aggregate Fair 
Market Value on the date of exercise equal to the amount of the withholding 
taxes being paid through such delivery, reduction or subsequent return of 
Share.

          11.  TRANSFERABILITY AND TERMINATION OF EMPLOYMENT.

          (a)  TRANSFERABILITY.  During the lifetime of an optionee, only 
     such optionee or his or her guardian or legal representative may 
     exercise options granted under this Plan, and no option granted under 
     this Plan shall be assignable or transferable by the optionee otherwise 
     than by will or the laws of descent and distribution or pursuant to a 
     domestic relations order as defined by the Code or Title I of the 
     Employee Retirement Income Security Act, or the rules thereunder; 
     provided, however, that any optionee may transfer a non-statutory stock 
     option granted under this Plan to a member or members of his or her 
     immediate family (i.e., his or her children, grandchildren and spouse) 
     or to one or more trusts for the benefit of such family members or 
     partnerships in which such family members are the only partners, if (i) 
     the option agreement with respect to such option expressly so provides 
     either at the time of initial grant or by amendment to an outstanding 
     option agreement and (ii) the optionee does not receive any 
     consideration for the transfer.  Any options held by any such transferee 
     shall continue to be subject to the same terms and conditions that were 
     applicable to such options immediately prior to their transfer and may 
     be exercised by such transferee as and to the extent that such option 
     has become exercisable and has not terminated in accordance with the 
     provisions of the Plan and the applicable option agreement.  For 
     purposes of any provision of this Plan relating to notice to an optionee 
     or to vesting or termination of an option upon the death, disability or 
     termination of employment of an optionee, the references to "optionee" 
     shall mean the original grantee of an option and not any transferee.

          (b)  TERMINATION OF EMPLOYMENT DURING LIFETIME.  During the 
     lifetime of an optionee, an option granted to such optionee may be 
     exercised only while the optionee is employed by the Company or by a 
     parent or subsidiary thereof, and only if such optionee has been 
     continuously so employed since the date the option was granted, provided 
     that (except as may be otherwise provided in the applicable option 
     agreement at the time of grant or thereafter):

               (i)    if an optionee's employment is terminated for cause 
          (which for purposes hereof shall mean that the optionee was 
          convicted of a felony or the optionee failed to contest prosecution 
          for a felony or the optionee engaged in willful misconduct or 
          dishonesty, any of which is directly and materially harmful to the 
          business or reputation 

<PAGE>

          of the Company), then the option shall terminate immediately upon 
          such termination of employment; 

               (ii)   if an optionee's employment is voluntarily terminated 
          by the optionee, otherwise than in connection with the optionee's 
          retirement (which for purposes hereof shall mean (a) retirement 
          from active employment with the Company or any subsidiary or parent 
          of the Company prior to age 60 with the consent of the Committee or 
          (b) retirement from active employment with the Company or any 
          subsidiary or parent of the Company on or after age 60) then the 
          option shall continue to be exercisable for ten days after the 
          termination of the optionee's employment but only to the extent 
          that the option was exercisable immediately prior to such 
          optionee's termination of employment;

               (iii)  if an optionee's employment is terminated by the 
          Company otherwise than for cause, then the option shall continue to 
          be exercisable for three months after termination of the optionee's 
          employment but only to the extent that the option was exercisable 
          immediately prior to such optionee's termination of employment;

               (iv)   if an optionee's employment is terminated by reason of 
          retirement, death or disability (which for purposes hereof shall 
          mean permanent and total disability as determined by the 
          Committee), then the option shall continue to be exercisable for 
          three years after termination of the optionee's employment but only 
          to the extent that the option was exercisable immediately prior to 
          such optionee's termination of employment; and

               (v)    as to any optionee whose termination of employment 
          occurs following a declaration pursuant to paragraph 13 below, an 
          option may be exercised at any time permitted by such declaration.

          (c)  TRANSFERS AND LEAVES OF ABSENCE.  Neither the transfer of 
     employment of a person to whom an option is granted between any 
     combination of the Company, a parent corporation or a subsidiary 
     thereof, nor a leave of absence granted to such person and approved by 
     the Committee, shall be deemed a termination of employment for purposes 
     of this Plan.  The terms "parent" or "parent corporation" and 
     "subsidiary" as used in this Plan shall have the meaning ascribed to 
     "parent corporation" and "subsidiary corporation", respectively, in 
     Sections 424(e) and (f) of the Code.

          (d)  RIGHT TO TERMINATE EMPLOYMENT.  Nothing contained in this 
     Plan, or in any option granted pursuant to this Plan, shall confer upon 
     any optionee any right to continued employment by the Company or any 
     parent or subsidiary of the Company or limit in any way the right of the 
     Company or any such parent or subsidiary to terminate such optionee's 
     employment at any time.

<PAGE>

          (e)  EXPIRATION DATE.  In no event shall any option be exercisable 
     at any time after the time it shall have expired in accordance with 
     paragraph 5(d) of this Plan.  When an option is no longer exercisable, 
     it shall be deemed to have lapsed or terminated and will no longer be 
     outstanding.

          12.  CHANGE IN CONTROL.

          (a)  For purposes of this Plan, a "Change in Control" of the 
     Company shall be deemed to occur if any of the following occur:

               (1)  Any "person" (as such term is used in Sections 13(d) and 
          14(d) of the Exchange Act) acquires or becomes a "beneficial owner" 
          (as defined in Rule 13d-3 or any successor rule under the Exchange 
          Act), directly or indirectly, of securities of the Company 
          representing 30% or more of the combined voting power of the 
          Company's then outstanding securities entitled to vote generally in 
          the election of directors ("Voting Securities"), provided, however, 
          that the following shall not constitute a Change in Control 
          pursuant to this paragraph (a)(1):

               (A)  any acquisition or beneficial ownership by the Company or 
                    a subsidiary;

               (B)  any acquisition or beneficial ownership by any employee 
                    benefit plan (or related trust) sponsored or maintained 
                    by the Company or one or more of its subsidiaries;

               (C)  any acquisition or beneficial ownership by any 
                    corporation with respect to which, immediately following 
                    such acquisition, more than 70% of both the combined 
                    voting power of the Company's then outstanding Voting 
                    Securities and the Shares of the Company is then 
                    beneficially owned, directly or indirectly, by all or 
                    substantially all of the persons who beneficially owned 
                    Voting Securities and Shares of the Company immediately 
                    prior to such acquisition in substantially the same 
                    proportions as their ownership of such Voting Securities 
                    and Shares, as the case may be, immediately prior to such 
                    acquisition;

               (2)  A majority of the members of the Board of Directors of 
          the Company shall not be Continuing Directors.  "Continuing 
          Directors" shall mean:  (A) individuals who, on the date hereof, 
          are directors of the Company, (B) individuals elected as directors 
          of the Company subsequent to the date hereof for whose election 
          proxies shall have been solicited by the Board of Directors of the 
          Company or (C) any individual elected or appointed by the Board of 
          Directors of the Company to fill vacancies on the Board of 
          Directors of the Company caused by death or resignation (but not by 
          removal) or to fill newly-created directorships;

<PAGE>

               (3)  Approval by the shareholders of the Company of a 
          reorganization, merger or consolidation of the Company or a 
          statutory exchange of outstanding Voting Securities of the Company, 
          unless immediately following such reorganization, merger, 
          consolidation or exchange, all or substantially all of the persons 
          who were the beneficial owners, respectively, of Voting Securities 
          and Shares of the Company immediately prior to such reorganization, 
          merger, consolidation or exchange beneficially own, directly or 
          indirectly, more than 70% of, respectively, the combined voting 
          power of the then outstanding voting securities entitled to vote 
          generally in the election of directors and the then outstanding 
          shares of common stock, as the case may be, of the corporation 
          resulting from such reorganization, merger, consolidation or 
          exchange in substantially the same proportions as their ownership, 
          immediately prior to such reorganization, merger, consolidation or 
          exchange, of the Voting Securities and Stock of the Company, as the 
          case may be; or

               (4)  Approval by the shareholders of the Company of (x) a 
          complete liquidation or dissolution of the Company or (y) the sale 
          or other disposition of all or substantially all of the assets of 
          the Company (in one or a series of transactions), other than to a 
          corporation with respect to which, immediately following such sale 
          or other disposition, more than 70% of, respectively, the combined 
          voting power of the then outstanding voting securities of such 
          corporation entitled to vote generally in the election of directors 
          and the then outstanding shares of common stock of such corporation 
          is then beneficially owned, directly or indirectly, by all or 
          substantially all of the persons who were the beneficial owners, 
          respectively, of the Voting Securities and Shares of the Company 
          immediately prior to such sale or other disposition in 
          substantially the same proportions as their ownership, immediately 
          prior to such sale or other disposition, of the Voting Securities 
          and Shares of the Company, as the case may be.

          (b)  ACCELERATION OF VESTING.  Notwithstanding anything in 
     paragraph 5(c) above to the contrary, if a Change of Control of the 
     Company shall occur, then, without any action by the Committee or the 
     Board, each option granted under this Plan and not already exercised in 
     full or otherwise terminated, expired or canceled shall become 
     immediately exercisable in full.

          (c)  CASH PAYMENT.  If a Change in Control of the Company shall 
     occur, then, so long as a majority of the members of the Board are 
     Continuing Directors, the Committee, in its sole discretion, and without 
     the consent of the holder of any option affected thereby, may determine 
     that some or all outstanding options shall be cancelled as of the 
     effective date of any such Change in Control and that the holder or 
     holders of such cancelled options shall receive, with respect to some or 
     all of the Common Shares subject to such options, as of the date of such 
     cancellation, cash in an amount, for each Share subject to an option, 
     equal to the excess of the per Share Fair Market Value of such Shares 
     immediately prior to such Change in Control of the Company over the 
     exercise price per Share of such options.

<PAGE>

          (d)  LIMITATION ON CHANGE IN CONTROL PAYMENTS.  Notwithstanding 
     anything in paragraph 12(b) or 12(c) above or paragraph 13 below to the 
     contrary, if, with respect to an optionee, the acceleration of the 
     exercisability of an option or the payment of cash in exchange for all 
     or part of an option as provided in paragraph 12(b) or 12(c) above or 
     paragraph 13 (which acceleration or payment could be deemed a "payment" 
     within the meaning of Section 280G(b)(2) of the Code), together with any 
     other payments which such optionee has the right to receive from the 
     Company or any corporation which is a member of an "affiliated group" 
     (as defined in Section 1504(a) of the Code without regard to Section 
     1504(b) of the Code) of which the Company is a member, would constitute 
     a "parachute payment" (as defined in Section 280G(b)(2) of the Code), 
     then such acceleration of exercisability and payments pursuant to 
     paragraph 12(b) or 12(c) above or paragraph 13 shall be reduced to the 
     largest amount as, in the sole judgment of the Committee, will result in 
     no portion of such payments being subject to the excise tax imposed by 
     Section 4999 of the Code.

          13.  DISSOLUTION, LIQUIDATION, MERGER.  In the event of (a) the 
proposed dissolution or liquidation of the Company, (b) a proposed sale of 
substantially all of the assets of the Company or (c) a proposed merger, 
consolidation of the Company with or into any other entity, regardless of 
whether the Company is the surviving corporation, or a proposed statutory 
share exchange with any other entity (the actual effective date of the 
dissolution, liquidation, sale, merger, consolidation or exchange being 
herein called an "Event"), the Committee may, but shall not be obligated to, 
either (i) if the Event is a merger, consolidation or statutory share 
exchange, make appropriate provision for the protection of outstanding 
options granted under this Plan by the substitution, in lieu of such options, 
of options to purchase appropriate voting common stock (the "Survivor's 
Stock") of the corporation surviving any such merger or consolidation or, if 
appropriate, the parent corporation of the Company or such surviving 
corporation, or, alternatively, by the delivery of a number of shares of the 
Survivor's Stock which has a Fair Market Value as of the effective date of 
such merger, consolidation or statutory share exchange equal to the product 
of (x) the excess of (A) the Event Proceeds per Share (as hereinafter 
defined) covered by the option as of such effective date over (B) the 
exercise price per Share of the Shares subject to such option, times (y) the 
number of Shares covered by such option or (ii) declare, at least twenty days 
prior to the Event, and provide written notice to each optionee of the 
declaration, that each outstanding option, whether or not then exercisable, 
shall be canceled at the time of, or immediately prior to the occurrence of, 
the Event (unless it shall have been exercised prior to the occurrence of the 
Event).  In connection with any declaration pursuant to clause (ii) of the 
preceding sentence, the Committee may, but shall not be obligated to, cause 
payment to be made, within twenty days after the Event, in exchange for each 
cancelled option to each holder of an option that is cancelled, of cash equal 
to the amount (if any), for each Share covered by the canceled option, by 
which the Event Proceeds per Share (as hereinafter defined) exceeds the 
exercise price per Share covered by such option.  At the time of any 
declaration pursuant to clause (ii) of the first sentence of this paragraph 
13, each option that has not previously expired pursuant to paragraph 5(d)(i) 
or 5(d)(ii) of this Plan or been cancelled pursuant to paragraph 12(c) of 
this Plan shall immediately become exercisable in full and each holder of an 
option shall have the right, during the period preceding the time of 
cancellation of the option, to exercise his or her option as to all or any 
part of the Shares covered thereby.  In the event of a declaration pursuant 
to clause (ii) of the first sentence of this paragraph 13, each outstanding 
option granted pursuant to this 

<PAGE>

Plan that shall not have been exercised prior to the Event shall be canceled 
at the time of, or immediately prior to, the Event, as provided in the 
declaration, and this Plan shall terminate at the time of such cancellation, 
subject to the payment obligations of the Company provided in this paragraph 
13.  Notwithstanding the foregoing, no person holding an option shall be 
entitled to the payment provided in this paragraph 13 if such option shall 
have expired pursuant to paragraph 5(d)(i) or 5(d)(ii) of this Plan or been 
cancelled pursuant to paragraph 12(c) of this Plan.  For purposes of this 
paragraph 13, "Event Proceeds per Share" shall mean the cash plus the fair 
market value, as determined in good faith by the Committee, of the non-cash 
consideration to be received per Share by the shareholders of the Company 
upon the occurrence of the Event.

          14.  ADJUSTMENTS.  In the event of any reorganization, merger, 
consolidation, recapitalization, liquidation, reclassification, stock 
dividend, stock split, combination of shares, rights offering, or 
extraordinary dividend or divestiture (including a spin-off), or any other 
change in the corporate structure or Shares of the Company, the Committee (or 
if the Company does not survive any such transaction, a comparable committee 
of the Board of Directors of the surviving corporation) may, without the 
consent of any holder of an option, make such adjustment as it determines in 
its discretion to be appropriate as to the number and kind of securities 
subject to and reserved under this Plan and, in order to prevent dilution or 
enlargement of rights of participants in this Plan, the number and kind of 
securities issuable upon exercise of outstanding options and the exercise 
price thereof.

          15.  SUBSTITUTE OPTIONS.  Options may be granted under this Plan 
from time to time in substitution for stock options held by employees of 
other corporations who are about to become employees of the Company, or any 
parent or subsidiary thereof, or whose employer is about to become a 
subsidiary of the Company, as the result of a merger or consolidation of the 
Company or a subsidiary of the Company with another corporation, the 
acquisition by the Company or a subsidiary of the Company of all or 
substantially all the assets of another corporation or the acquisition by the 
Company or a subsidiary of the Company of at least 50% of the issued and 
outstanding stock of another corporation.  The terms and conditions of the 
substitute options so granted may vary from the terms and conditions set 
forth in this Plan to such extent as the Board at the time of the grant may 
deem appropriate to conform, in whole or in part, to the provisions of the 
stock options in substitution for which they are granted, but with respect to 
stock options which are incentive stock options, no such variation shall be 
permitted which affects the status of any such substitute option as an 
incentive stock option.

          16.  COMPLIANCE WITH LEGAL REQUIREMENTS.

          (a)  GENERAL.  No certificate for Shares distributable under this 
     Plan shall be issued and delivered unless the issuance of such 
     certificate complies with all applicable legal requirements including, 
     without limitation, compliance with the provisions of applicable state 
     securities laws, the Securities Act of 1933, as amended, and the 
     Exchange Act.

          (b)  RULE 16b-3.  With respect to Section 16 Individuals, 
     transactions under this Plan are intended to comply with all applicable 
     conditions of Rule 16b-3 or its successors under the Exchange Act.  To 
     the extent any provision of this Plan or action by the Committee fails 
     to so 

<PAGE>

     comply, it shall be deemed null and void, to the extent permitted by law 
     and deemed advisable by the Committee.

          17.  GOVERNING LAW.  To the extent that federal laws do not 
otherwise control, this Plan and all determinations made and actions taken 
under this Plan shall be governed by the laws of the State of Minnesota, 
without regard to the conflicts of law provisions thereof, and construed 
accordingly.

          18.  AMENDMENT AND DISCONTINUANCE OF PLAN.  The Board may at any 
time amend, suspend or discontinue this Plan; provided, however, that no 
amendment to this Plan shall, without the consent of the holder of the 
option, alter or impair any option previously granted under this Plan.  To 
the extent considered necessary to comply with applicable provisions of the 
Code, any such amendments to this Plan may be made subject to approval by the 
shareholders of the Company. Notwithstanding the foregoing, paragraph 5(e) of 
this Plan may not be amended without the approval of the shareholders of the 
Company.

          19.  TERM.

          (a)  EFFECTIVE DATE.  This Plan shall be effective as of March 24, 
     1998.

          (b)  TERMINATION.  This Plan shall remain in effect until all 
     Shares subject to it are distributed or this Plan is terminated under 
     paragraph 18 above.  No award of an incentive stock option shall be made 
     under this Plan more than ten years after the effective date of this 
     Plan (or such other limit as may be required by the Code) if such 
     limitation is necessary to qualify the option as an incentive stock 
     option. 


<PAGE>

                                                                   EXHIBIT 23.2

                     CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


We hereby consent to the incorporation by reference in this Registration 
Statement on Form S-8 of our report dated May 8, 1998 appearing on page 32 of 
Minntech Corporation's Annual Report on Form 10-K for the year ended
March 31, 1998.




PRICEWATERHOUSECOOPERS LLP
Minneapolis, Minnesota
January 11, 1999


<PAGE>

                                                                     EXHIBIT 24

                             MINNTECH CORPORATION

                              Power of Attorney
                          of Director and/or Officer


     The undersigned director and/or officer of Minntech Corporation, a 
Minnesota corporation, does hereby make, constitute and appoint Thomas J. 
McGoldrick and Barbara A. Wrigley, and any one of them, the undersigned's 
true and lawful attorneys-in-fact, with power of substitution, for the 
undersigned and in the undersigned's name, place and stead, to sign and affix 
the undersigned's name as such director and/or officer of said Corporation to 
a Registration Statement or Registration Statements, on Form S-8 or other 
applicable form, and all amendments, including post-effective amendments, 
thereto, to be filed by said Corporation with the Securities and Exchange 
Commission, Washington, D.C., in connection with the registration under the 
Securities Act of 1933, as amended, of shares of Common Stock of said 
Corporation authorized for issuance under said Corporation's 1998 Stock 
Option Plan, and to file the same, with all exhibits thereto and other 
supporting documents, with said Commission, granting unto said 
attorneys-in-fact, and either of them, full power and authority to do and 
perform any and all acts necessary or incidental to the performance and 
execution of the powers herein expressly granted.

     IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's 
hand this 12th day of January, 1999.


                                      /s/ Norman Dann 
                                      -------------------------------------
                                      Norman Dann

<PAGE>

                             MINNTECH CORPORATION

                              Power of Attorney
                          of Director and/or Officer


     The undersigned director and/or officer of Minntech Corporation, a 
Minnesota corporation, does hereby make, constitute and appoint Thomas J. 
McGoldrick and Barbara A. Wrigley, and any one of them, the undersigned's 
true and lawful attorneys-in-fact, with power of substitution, for the 
undersigned and in the undersigned's name, place and stead, to sign and affix 
the undersigned's name as such director and/or officer of said Corporation to 
a Registration Statement or Registration Statements, on Form S-8 or other 
applicable form, and all amendments, including post-effective amendments, 
thereto, to be filed by said Corporation with the Securities and Exchange 
Commission, Washington, D.C., in connection with the registration under the 
Securities Act of 1933, as amended, of shares of Common Stock of said 
Corporation authorized for issuance under said Corporation's 1998 Stock 
Option Plan, and to file the same, with all exhibits thereto and other 
supporting documents, with said Commission, granting unto said 
attorneys-in-fact, and either of them, full power and authority to do and 
perform any and all acts necessary or incidental to the performance and 
execution of the powers herein expressly granted.

     IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's 
hand this 12th day of January, 1999.


                                      /s/ George Heenan 
                                      -------------------------------------
                                      George Heenan

<PAGE>

                             MINNTECH CORPORATION

                              Power of Attorney
                          of Director and/or Officer


     The undersigned director and/or officer of Minntech Corporation, a 
Minnesota corporation, does hereby make, constitute and appoint Thomas J. 
McGoldrick and Barbara A. Wrigley, and any one of them, the undersigned's 
true and lawful attorneys-in-fact, with power of substitution, for the 
undersigned and in the undersigned's name, place and stead, to sign and affix 
the undersigned's name as such director and/or officer of said Corporation to 
a Registration Statement or Registration Statements, on Form S-8 or other 
applicable form, and all amendments, including post-effective amendments, 
thereto, to be filed by said Corporation with the Securities and Exchange 
Commission, Washington, D.C., in connection with the registration under the 
Securities Act of 1933, as amended, of shares of Common Stock of said 
Corporation authorized for issuance under said Corporation's 1998 Stock 
Option Plan, and to file the same, with all exhibits thereto and other 
supporting documents, with said Commission, granting unto said 
attorneys-in-fact, and either of them, full power and authority to do and 
perform any and all acts necessary or incidental to the performance and 
execution of the powers herein expressly granted.

     IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's 
hand this 7th day of January, 1999.


                                       /s/ Amos Heilicher
                                      -------------------------------------
                                      Amos Heilicher

<PAGE>

                             MINNTECH CORPORATION

                              Power of Attorney
                          of Director and/or Officer


     The undersigned director and/or officer of Minntech Corporation, a 
Minnesota corporation, does hereby make, constitute and appoint Thomas J. 
McGoldrick and Barbara A. Wrigley, and any one of them, the undersigned's 
true and lawful attorneys-in-fact, with power of substitution, for the 
undersigned and in the undersigned's name, place and stead, to sign and affix 
the undersigned's name as such director and/or officer of said Corporation to 
a Registration Statement or Registration Statements, on Form S-8 or other 
applicable form, and all amendments, including post-effective amendments, 
thereto, to be filed by said Corporation with the Securities and Exchange 
Commission, Washington, D.C., in connection with the registration under the 
Securities Act of 1933, as amended, of shares of Common Stock of said 
Corporation authorized for issuance under said Corporation's 1998 Stock 
Option Plan, and to file the same, with all exhibits thereto and other 
supporting documents, with said Commission, granting unto said 
attorneys-in-fact, and either of them, full power and authority to do and 
perform any and all acts necessary or incidental to the performance and 
execution of the powers herein expressly granted.

     IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's 
hand this 12th day of January, 1999.


                                      /s/ William Hope
                                      -------------------------------------
                                      William Hope

<PAGE>

                             MINNTECH CORPORATION

                               Power of Attorney
                          of Director and/or Officer


     The undersigned director and/or officer of Minntech Corporation, a 
Minnesota corporation, does hereby make, constitute and appoint Thomas J. 
McGoldrick and Barbara A. Wrigley, and any one of them, the undersigned's 
true and lawful attorneys-in-fact, with power of substitution, for the 
undersigned and in the undersigned's name, place and stead, to sign and affix 
the undersigned's name as such director and/or officer of said Corporation to 
a Registration Statement or Registration Statements, on Form S-8 or other 
applicable form, and all amendments, including post-effective amendments, 
thereto, to be filed by said Corporation with the Securities and Exchange 
Commission, Washington, D.C., in connection with the registration under the 
Securities Act of 1933, as amended, of shares of Common Stock of said 
Corporation authorized for issuance under said Corporation's 1998 Stock 
Option Plan, and to file the same, with all exhibits thereto and other 
supporting documents, with said Commission, granting unto said 
attorneys-in-fact, and either of them, full power and authority to do and 
perform any and all acts necessary or incidental to the performance and 
execution of the powers herein expressly granted.

     IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's 
hand this 5th day of January, 1999.


                                      /s/ Thomas J. McGoldrick 
                                      -------------------------------------
                                      Thomas J. McGoldrick

<PAGE>

                             MINNTECH CORPORATION

                              Power of Attorney
                          of Director and/or Officer


     The undersigned director and/or officer of Minntech Corporation, a 
Minnesota corporation, does hereby make, constitute and appoint Thomas J. 
McGoldrick and Barbara A. Wrigley, and any one of them, the undersigned's 
true and lawful attorneys-in-fact, with power of substitution, for the 
undersigned and in the undersigned's name, place and stead, to sign and affix 
the undersigned's name as such director and/or officer of said Corporation to 
a Registration Statement or Registration Statements, on Form S-8 or other 
applicable form, and all amendments, including post-effective amendments, 
thereto, to be filed by said Corporation with the Securities and Exchange 
Commission, Washington, D.C., in connection with the registration under the 
Securities Act of 1933, as amended, of shares of Common Stock of said 
Corporation authorized for issuance under said Corporation's 1998 Stock 
Option Plan, and to file the same, with all exhibits thereto and other 
supporting documents, with said Commission, granting unto said 
attorneys-in-fact, and either of them, full power and authority to do and 
perform any and all acts necessary or incidental to the performance and 
execution of the powers herein expressly granted.

     IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's 
hand this 5th day of January, 1999.


                                      /s/ Fred L. Shapiro, M.D. 
                                      -------------------------------------
                                      Fred L. Shapiro, M.D.

<PAGE>

                             MINNTECH CORPORATION

                              Power of Attorney
                          of Director and/or Officer


     The undersigned director and/or officer of Minntech Corporation, a 
Minnesota corporation, does hereby make, constitute and appoint Thomas J. 
McGoldrick and Barbara A. Wrigley, and any one of them, the undersigned's 
true and lawful attorneys-in-fact, with power of substitution, for the 
undersigned and in the undersigned's name, place and stead, to sign and affix 
the undersigned's name as such director and/or officer of said Corporation to 
a Registration Statement or Registration Statements, on Form S-8 or other 
applicable form, and all amendments, including post-effective amendments, 
thereto, to be filed by said Corporation with the Securities and Exchange 
Commission, Washington, D.C., in connection with the registration under the 
Securities Act of 1933, as amended, of shares of Common Stock of said 
Corporation authorized for issuance under said Corporation's 1998 Stock 
Option Plan, and to file the same, with all exhibits thereto and other 
supporting documents, with said Commission, granting unto said 
attorneys-in-fact, and either of them, full power and authority to do and 
perform any and all acts necessary or incidental to the performance and 
execution of the powers herein expressly granted.

     IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's 
hand this 5th day of January, 1999.


                                      /s/ Donald H. Soukup 
                                      -------------------------------------
                                      Donald H. Soukup



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