EXHIBIT 23.1

            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statement (Form
S-8 No. 333-73924)  pertaining to the 1991 Employee Incentive Stock Option Plan,
in the Registration  Statement (Form S-8 No.  333-18907)  pertaining to the 1996
Employee  Incentive Stock Option Plan and the 1996  Non-Employee  Director Stock
Option Plan, in the Registration  Statement (Form S-8 No. 333-78795)  pertaining
to the 1998  Employee  Incentive  Stock  Option  Plan,  and in the  Registration
Statement (Form S-8 No. 333-63166)  pertaining to the 2001 Employee Stock Option
Plan,  of our report  dated August 23,  2004,  with respect to the  consolidated
financial statements and schedule of MISONIX,  INC. for the years ended June 30,
2004 and 2003  included in its Annual Report (Form 10-K) for the year ended June
30, 2004.


                                                    /s/ Ernst  & Young  LLP

Melville, New York
September 13, 2004