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.

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.

SiliaPrep Carboxylic Acid is a weak cation exchanger sorbent (WCX) used to extract strong basic compounds