Hach Ultrawww.hachultra.com
GE Analytical Instruments (formerly Ionics)www.geinstruments.com
optek-Danulat, Inc.www.optek.com
Mettler-Toledo Thornton, Inc.
Burkert
Kernco Instruments
Metrohm USA, Inc. (formerly Brinkmann Instruments in the US)
Anatel/HIAC/MetOne/Orbisphere
Cole-Parmer
USFilter
Ionics Inc
Myron L Company
Millipore Corp