Bel-Art Products
Benchmark Research Products
Bio Plas Inc. Bioptechs Inc. Cargille Laboratories Inc. Chroma Technology Corp. Control Company Diagnostic Instruments Inc.
Dolan-Jenner Industries, Inc. Eberbach Corp. George Tiemann & Co. Hausser Scientific Heathrow Scientific Jenco Kinetic Systems Inc. Klarmann Rulings Inc. McCoy Health Science Supply
Modulation Optics National Optical & Scientific Opti Quip Inc. Physitemp Instruments Inc. Polar Ware Ricca Chemical Co. Simport Plastics LTD Stoelting Co. Sutter Instrument Co. Technical Mfg. Corp. (TMC) TrippNT Inc. 20/20 Technology Inc.