Agilent
Thermo/Dionex
AB Sciex
Beckman
Hitachi
Dionex
GE
Gilson
Gynkotek
Hewlett Packard
Jasco
Knauer
LDC
LKB Pharmacia
Merck Hitachi
MSI
Perkin Elmer
Rainin
Shimadzu
Spectra Physics
Thermo Separations
Varian
Waters