Buchner style filter funnel having a lower standard taper inner joint and serrated tubulation for connection to a vacuum source.
Improved design incorporates a delivery stem being sealed within the inner joint to prevent breakage. Funnel is supplied with a 3” piece of Teflon tubing that slides over the delivery stem. The tubing permits the funnel to be used during filtrations at higher vacuums without having the fluid pulled into the vacuum source. Overall height is without the Teflon tubing.