These Cole-Parmer glass filtration assemblies will accept a 47-mm membrane and will fit perfectly into a filter flask with no. 8 stopper neck size. Glass filter holder assembly consists of a 300-mL borosilicate glass funnel and base, no. 8 silicone rubber stopper with hole, and anodized aluminum clamp.

These filtration assemblies are designed for HPLC, particulate, and microbiological contamination filtrations of particulate analysis.