Cylindrical style addition funnel with a 24/40 standard taper top outer joint and your choice of lower inner joint (contact us for sizes not listed). With pressure equalizing arm and PTFE stopcock. Funnels are supplied complete with a stopper.
Use addition funnels with PTFE piston style valve for high vacuum use.
Use addition funnels with air free 3-way valve for inert gas purging
Use powder addition funnels for adding solids
