With medium porosity fitted disc and 2 mm bore PTFE stopcock.

With medium porosity fitted disc and with a "T"-bore stopcock to allow nitrogen to be introduced.

With medium porosity fitted disc and with a "T"-bore stopcock to allow nitrogen to be introduced, but with a 24/40 joint.

Peptide synthesis vessels complete with top conical o-ring grooved flange to support a reaction head. Lower drain comes complete with a PTFE valve and Viton o-rings. Side hose connections are removable polypropylene. Vessel is constructed with a coarse porosity fitted disc.