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GS-Tek is a Delawarean manufacturer of chromatography columns and accessories. We provide worldwide analytical scientists with the innovative and quality products and tools they needs from scientific fronting researches including new materials and ...

Markes (a Velaris brand) is a world-leading developer of technologies that enhance the analytical power of GC for both routine & research work. Its award-winning thermal desorption & automated sample extraction/concentration systems enable highly ...