The 47mm filtration assemblies are designed to handle up to 500mL of liquids for analysis of particulate or microbiological contamination. The glass components are manufactured from Wheaton 33® low extractable borosilicate glass (meets ASTM Type I Class A and USP Type I standards). Flasks have a #2 hose connection for 1/4 (6mm) I.D. tubing. It is supplied with a coarse porosity (40-60µm) fritted glass support base, 300mL graduated funnel, anodized aluminum clamp, and a No. 8 silicone stopper.