For vacuum filtration of liquids, especially in the analysis of microbiological and particulate contamination using the Membrane Filter Technique. Accepts 47mm dia. filter membranes. Dual magnets ensure a tight, no-leak seal between funnel body and stem, eliminating the need for cumbersome clamps.

The magnetic connection of the funnel allows one-handed operation and prevents possible twisting and tearing of the filter membrane. A ridge on the base guides and holds membrane in position. Forcep access points provide easy retrieval of the filter. Connection can be made with a rubber stopper into a filter funnel manifold or a sidearm flask. Durable, chemical-resistant polyphenylsulfone construction is compatible with anti-foaming agents and many other solvents. With 50mL graduation for accurate sample measurement. Washable, autoclavable, and UV sterilizable.