SiliaPrep Amine is a weak anion exchanger sorbent used in replacement of SAX for strong anions to avoid irreversible retention. Can also be employed as a metal scavenger and in normal phase conditions.

SiliaPrep C18 (17%) is a strongly hydrophobic and non polar sorbent. It is very useful for the extraction of acidic / neutral / basic compounds from aqueous solutions, organic compounds from water and drugs & metabolites from fluids.

SiliaPrep Propylsulfonic Acid nec is a strong cation exchanger and maintains a negative charge throughtout the pH scale. The most common use is a strong cation exchanger for the amine and basics molecules “catch and release” purification technique in SPE cartridges.

SiliaPrep TMA Chloride (SAX) is a strong anion exchanger sorbent positively charged under all conditions used to extract acid molecules (pKa 3-5).

SiliaPrep Tosic Acid (SCX) is a strong cation exchanger and maintains a negative charge throughtout the pH scale. The most common use is a strong cation exchanger for the amine and basics molecules “catch and release” purification technique in SPE cartridges.

When used at pH ≤ 7.8, Amine is protonated and may be used as a weak anion exchanger (WAX).

SiliaPrep C18 nec (17%) is a non-polar sorbent similar to SiliaPrep C18 but presents higher retention and polar selectivity for basic compounds.

SiliaPrep C8 is a non-polar sorbent and presents a moderate hydrophobicity. This phase is used to extract extremely non-polar compounds. SiliaPrep C8 is more selective than the C18 phase for compounds such as heavy PAH, vitamins D and oil & greasy compounds.

SiliaPrep Carbonate (or Si-CO3) is the silica bound equivalent of tetramethyl ammonium carbonate. It can be used as a general base to quench a reaction, to free base amines in their ammonium salt form and to scavenge acids, boronic acids and acidic phenols, including HOBt, which is widely used in amide coupling reactions.