Available with a choice of coarse or medium porosity fritted discs.

With two 2mm glass stopcocks having constant pressure retention devices.

Supplied with high vacuum valve, PTFE O-ring at tip, and PTFE wiper to protect Viton O-ring of shaft.

With two 2mm glass stopcocks.

With a 0-4mm high vacuum valve and a 2mm glass stopcock having constant pressure retention device. Socket joint on top.

With a 0-4mm high vacuum valve and a 2mm glass stopcock having constant pressure retention device. Cone joint on top.