SIELC Technologies invented, developed, and manufactures new revolutionary types of stationary phases for liquid chromatography. These phases, marketed under the PrimesepT brand, offer unprecedented selectivity in separation of a broad array of chemical compounds and in multiple applications. We offer a wide range of HPLC columns with id's from 1 mm to 22 mm. We offer corresponding Primesep and Promix guard columns with all types of stationary phases packed with C18, C8, NH2, CN, Si, as well as Primesep and Promix support. In addition to offering method development for customers, we also offer custom LC-phase manufacturing tailored for specific separations.