EXHIBIT 23.1


            Consent of Independent Registered Public Accounting Firm

IRIS International, Inc.
Chatsworth, California

We  hereby  consent  to the  incorporation  by  reference  in this  Registration
Statement of our report dated  February 27, 2004,  except for Note 7 which is as
of March 11, 2004,  relating to the  consolidated  financial  statements of IRIS
International,  Inc.  appearing in the Company's  Annual Report on Form 10-K for
the year ended December 31, 2003.


/s/ BDO Seidman, LLP
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Los Angeles, California
February 2, 2005