Supplied with a hollow glass stopper and PTFE stopcock with 2mm or 4mm bore.

Heavy wall inner tube has a 4mm hole at die side wall. When the inner tube is pressed down, the interior of pressure vessel connects with its exterior. When the inner tube is lifted up, the insede and outside disconnect with each other....

With PTFE adjustable bore metering plug. Turning the adjustment knob allows flow rate to be controlled from full flow to drop wise. The metering plug completely solves the problems of sudden overflow or non-flow during addition of reagents.

With 1:5 Teflon® stopcock

With a 0-4mm vacuum valve and a glass stopcock with 2mm bore having constant pressure retention device. C-coarse, M-medium porosity. (For porosity grade see table in appendix).

For use with multi-neck flasks.

With a 0-4mm vacuum valve and a glass stopcock with 2mm bore having constant pressure retention device. C-coarse, M-medium porosity. (For porosity grade see table in appendix).

M-medium porosity. (For porosity grade see table in appendix).

Design of funnel permits addition of solvents to flash chromatography columns without disturbing the silica-gel/packing layer. Lower end of the funnel is closed and the stem has a series of small holes through which the solvent drains....

With two glass stopcock with 2mm bore having a constant pressure retention device. C-coarse, M-medium porosity. (For porosity grade see table in appendix).

C-coarse, M-medium porosity. (For porosity grade see table in appendix).

Funnels have 60° side angle and a standard taper inner joint.