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



                             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



                             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



                             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



                             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



                             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.



                             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