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| MicroChemical Systems SA |   |
| Del Mar Scientific, Ltd. |   | |
| Rae Systems Inc. |   | |
| Act Safe, Inc. |   | |
| A. W. Sperry |   | |
| Servomex Company |   | |
| Mettler Toledo, Inc. |   | |
| Comag IR Inc. |   | |
| GLI International |   | |
| Figaro USA, Inc. |   | |
| Cosa Instrument Corp. |   | |
| Alpha Omega Instruments Corp. |   | |
| Biosystems 651 South Main St. - Middletown, CT 06457 USA - - |   | |
| Agilent Technologies |   | |
| A. W. Sperry |   | |
| Comag IR Inc. |   | |
| Barber Colman Company |   | |
| Altech Environmental |   | |
| Act Safe, Inc. |   | |
| Scott Instruments |   | |
| Land Infrared |   | |
| Sensidyne Inc. 16333 Bay Vista Drive - Clearwater, FL 33760 USA - - |   | |
| Vacuum Technology |   | |
| Telaire |   | |
| BW Technologies |   | |
| Hiden Analytical Ltd |   | |
| ATC Inc. |   | |
| NDT International |   | |
| BW Technologies |   | |
| GOW MAC Instrument Company |   | |
| Vernier Software & Technology |   | |
| Ametek / Thermox |   | |
| Lumidor Safety Products - - - |   | |
| Aqualytic |   | |
| Act Safe, Inc. |   | |
| Rosemount Analytical Inc. |   | |
| Micromonitors |   | |
| Royce Instrument Corporation |   | |
| ECO Physics, Inc. |   | |
| City Technology Ltd. |   | |
| VTI Valtronics Inc. |   | |
| Yokogawa Corp. Of America |   | |
| Eco Sensors, Inc. |   | |
| Detcon, Inc. |   | |
| Nemoto & Co.,Ltd |   | |
| Nova Analytical Systems |   | |
| Applied Analytics |   | |
| TPS Pty Ltd |   | |
| Dryden Aqua |   | |
| Gas Tech, Inc. |   | |
| Land Infrared |   | |
| Gas Tech, Inc. |   | |
| Illinois Instruments, Inc. |   | |
| Panametrics |   | |
| TBI |   | |
| Comag IR Inc. |   | |
| Monitor Labs Inc. |   | |
| UView Ultraviolet Systems |   | |
| Fluke 6920 Seaway Blvd - PO Box 9090 - Everett, WA 98206 USA - |   | |
| Hach Company P.O. Box 389 - Loveland, CO 80539-0389 USA - - |   | |
| Datatest, Inc. |   | |
| Sierra Monitor Corporation SMC |   | |
| Analytical Industries, Inc. 2855 Metropolitan Place - Pomona, CA 91767 USA - - |   | |
| Ametek |   | |
| Telaire |   | |
| Amprobe |   | |
| Antek Instruments, Inc. |   | |
| Engineered Systems & Designs, Inc. |   | |
| American Sigma |   | |
| Vaisala |   | |
| Bacharach |   | |
| Flow Line Options Corp. (Flo Corp) |   | |
| JH Technology |   | |
| Dijita Controls Ltd. |   | |
| Uniloc Division Fisher-Rosemount 2400 Barranca Parkway - Irvine, CA 92606 USA - - |   | |
| TSI Incorporated |   | |
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