Restek is an independent company wholly owned by its employees, founded in 1985 in the United States. It designs, develops and manufactures high-quality chromatography consumables for a wide range of applications such as air, water and soil monitoring, as well as food, pharmaceutical and petroleum analysis. The brand offers a complete range of GC columns (Rxi in fused silica, MXT in stainless steel, WCOT, PLOT, packed or micro-packed columns), LC/HPLC/UHPLC columns (Force, Raptor and Roc series) and accessories for GC and LC, designed to replace or surpass the performance of the original products. Restek also supplies more than 1,500 certified reference materials (CRMs), manufactured and tested in its accredited laboratories, as well as a wide selection of products for air and gas sampling (RAVE+ canisters, bags, thermal desorption tubes) and sample preparation (SPE, PPT, SPME, QuEChERS, ASE, etc.). Committed to quality customer relations through its "Plus 1" philosophy, Restek draws on a strong corporate culture and recognised scientific expertise to support laboratories in their analyses with comprehensive and personalised technical service.