USP L## (Polyethylene Glycol 3350, TSKgel GOligo-PW) – Packing having the capacity to separate compounds with a molecular weight range from 100 – 3000 (as determined by polyethylene oxide), applied to neutral and anionic water-soluble polymers. A polymethacrylate resin base, crosslinked with polyhydroxylate ether (surface contains some residual cationic functional groups).