columns used in HPLC - An Overview
C18 displays The everyday options from the alkyl group - non-polar and ionically inert in most typical situations. Retention from a C18 stationary period emanates from weak van der Waals intermolecular drive that draws hydrophobic compounds. C18 along with other alkyl phases like C8 and C4 constitute the most essential type of reverse stage HPLC.A