SCX sorbent has benzenesulfonic acid as a bonded functional group with a very low pKa. The presence of the benzene ring in the functional group increases its potential for non-polar interaction. The two properties are quite useful in the absorption of cationic organic compounds from aqueous systems where non-polar compounds are seen.

HLB sorbent is composed of monodisperse N-vinylpyrrolidone-divinylbenzene copolymer resin particles, with specific mixture of hydrophilic hydrophobic groups, allowing for retention for a wide range of compounds with very high capacity.

C18 solid phase extraction column
Reversed phase C18 extraction column with silica gel as matrix. It has the characteristics of high bonding density, low loss and high recovery.