STYRE SCREEN® polymeric columns. Styre Screen® extraction sorbents are formulated with an ultra clean, highly cross-linked styrene and divinylbenzene polymer sorbent (PS/DVB). The sorbent can be functionalized with many of the same phases as our silica based sorbents. Possibilities include standard hydrophilic, hydrophobic, or ion exchange functionalities as well as copolymeric phases such as the DBX or THC phases. STYRE SCREEN® particles have an average particle size of 30 microns. This polymeric sorbent has a very high analyte capacity. This higher capacity translates into a lower bed mass. Lower bed mass means extractions can be run at faster flow rates and with less solvent usage.