MINNTECH CORP
EXHIBIT 10(N)
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<TYPE>EX-10.(N)
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<DESCRIPTION>EXHIBIT 10(N)
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<P ALIGN="RIGHT"><FONT SIZE=2>Exhibit 10(n) </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="kn2477_first_amendment"> </A></FONT> <FONT SIZE=2><B>FIRST AMENDMENT         </B></FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;THIS FIRST AMENDMENT is made and entered into as of this 1st day of August, 2000 (the "Effective Date"), between Minntech Corporation, a Minnesota corporation
(the "Company") and Thomas J. McGoldrick ("McGoldrick"). </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><B><I>RECITALS  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;WHEREAS, the Company and McGoldrick have previously entered into a Separation and Consulting Agreement dated July&nbsp;7, 2000 (the "Agreement"); and </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;WHEREAS,
both parties desire to amend the Agreement on the terms and conditions set forth in this First Amendment. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;NOW,
THEREFORE, in consideration of the mutual promises and covenants contained herein and therein and for other good and valuable consideration, the parties agree as follows: </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;1.&nbsp;&nbsp;Section&nbsp;3
e. shall be deleted in its entirety and the following substituted therefor: </FONT></P>

<UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;"e.</FONT><FONT
SIZE=2><I>&nbsp;&nbsp;Time.</I></FONT><FONT SIZE=2>&nbsp;&nbsp;At the Company's request, McGoldrick shall devote up to an average of 40&nbsp;hours per
month to his duties as a Consultant. If at the time of such request McGoldrick reasonably demonstrates to the Company that he is engaged in other business activities which would substantially
interfere with McGoldrick's ability to provide up to an average of 40&nbsp;hours per month to the Company, the Company shall release McGoldrick from the foregoing obligation. Notwithstanding the
foregoing, McGoldrick shall be obligated to provide a minimum of at least 4&nbsp;hours per month to his duties as a Consultant." </FONT></P>

</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;The
remainder of the Agreement shall stay in full force and effect. </FONT></P>

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<TD WIDTH="49%" VALIGN="TOP"><FONT SIZE=2><B>MINNTECH CORPORATION</B></FONT></TD>
<TD WIDTH="2%" VALIGN="TOP"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="49%" VALIGN="TOP"><FONT SIZE=2><B>MCGOLDRICK</B></FONT></TD>
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<TD WIDTH="49%" VALIGN="TOP"><FONT SIZE=2>&nbsp;<BR></FONT>
<HR NOSHADE><FONT SIZE=2> Barbara A. Wrigley<BR>
Executive Vice President</FONT></TD>
<TD WIDTH="2%" VALIGN="TOP"><FONT SIZE=2>&nbsp;<BR>&nbsp;</FONT></TD>
<TD WIDTH="49%" VALIGN="TOP"><FONT SIZE=2>&nbsp;<BR></FONT>
<HR NOSHADE><FONT SIZE=2> Thomas J. McGoldrick</FONT></TD>
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<FONT SIZE=2><A HREF="#kn2477_first_amendment">FIRST AMENDMENT</A></FONT><BR>
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