SampliQ SPE 

SampliQ Amino (NH₂) SPE products are based on irregular, silica gel (silica) particles. This dual purpose sorbent can act either as a polar phase or weak anion exchanger. When conditioned with a non-polar solvent, e.g., hexane, it can hydrogen bond with any molecule containing -OH, -NH, or -SH functional groups. In an aqueous environment with pH 7.8 or less, it can function as a weak anion exchanger.