Superlco (Sigma-Aldrich Group) ^*

Supelco/Sigma-Aldrich group is your trusted resource for analytical and chromatography products.

http://www.sigmaaldrich.com

Phenomenex^*

Phenomenex is dedicated to the development, manufacturing and supply of key products used in the analysis and purification of chemicals and biochemicals. Offering the widest selection of separation devices and consumables from a single supplier worldwide.

http://www.phenomenex.com

YMC ^*

Production and Sales of Packing Materials and Packed Columns for High Performance Liquid Chromatography(HPLC), Custom purification and Custom synthesis.

http://www.ymc.com.jp

Varian, Inc. 

Varian offers a very diversed chromatography products.

http://www.varianinc.com