CHATSWORTH, Calif.--(BUSINESS WIRE)--IRIS INTERNATIONAL, INC. (NASDAQ: IRIS) today announced record fourth-quarter 2006 revenue of $19.9 million, an increase of 16% over revenue of $17.2 million in the fourth quarter of 2005, and record full-year revenue of $70.6 million for the year ended Dec. 31, 2006, a 13% increase over revenue of $62.8 million for fiscal 2005.