New Step by Step Map For columns used in HPLC
C18 reveals the typical attributes from the alkyl group - non-polar and ionically inert in most common conditions. Retention from the C18 stationary period arises from weak van der Waals intermolecular power that pulls hydrophobic compounds. C18 together with other alkyl phases for example C8 and C4 represent by far the most elementary type of reve