SampliQ SPE 

SampliQ C2 Ethyl SPE products are manufactured using a trifunctional silane bonded to irregular, silica gel (silica) particles. They are not endcapped, allowing additional polar interactions with surface silanol groups. The short chain ethyl group provides less retention than the longer C8 and C18 chains, where retention is primarily based on non-polar interactions. The stronger interactions of this phase with basic and polar analytes can provide additional extraction selectivity.