CHATSWORTH, Calif.--(BUSINESS WIRE)--IRIS INTERNATIONAL, INC. (NASDAQ GM: IRIS) will hold a conference call with members of the investment community on Wednesday, May 9, at 4:30 p.m. Eastern time. César García, President and Chief Executive Officer, and Veronica Tarrant, Interim Chief Financial Officer, will be reviewing the Company’s financial results for the first quarter ended March 31, 2007, which will be announced at the close of market that day.