EXHIBIT 1

JOINT FILING AGREEMENT

     In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them a Statement on Schedule 13G (including amendments thereto) with regard to the common stock of IRIS International, Inc. and further agree that this Joint Filing Agreement be included as an Exhibit to such joint filings. In evidence thereof, the undersigned, being duly authorized, hereby execute this Joint Filing Agreement as of February 2, 2005.

THE PINNACLE FUND, L.P.
By:	Pinnacle Advisers, L.P., its general partner
By:	Pinnacle Fund Management, LLC, its general partner
By:	/s/ Barry M. Kitt
	Barry M. Kitt, its sole member
/s/ Barry M. Kitt
Barry M. Kitt