Our Inlet Solvent Filter is made from inert, biocompatible UHMWPE. This solvent filter allow you to pass tubing through to the bottom of the filter cup which enables the filter the to efficiently withdraw solvent from within 0.10 inches of the bottom of the solvent bottle. Filter Cups with a porosity of 10µm for Filters A-426, A-445, A-446 & A-447. They also come as a single or in a 5 pack.