Raven Laboratories Acquisition

NEWS FOR IMMEDIATE RELEASE: MAY 4, 2006 MESA LABS ACQUIRES RAVEN BIOLOGICAL LABORATORIES, INC.   LAKEWOOD, CO – Mesa Laboratories, Inc. (NASDAQ:MLAB), a Lakewood, Colorado based manufacturer of electronic measurement instruments, today reported that it has completed the acquisition of Raven Biological Laboratories, Inc. of Omaha, Nebraska. Raven, a privately held company, is a leading…