Burette stopcock, PTFE, for compact burette / automatic burette

Compact-Burettes, BLAUBRAND®, class AS, Boro 3,3, DE-M, with PTFE stopcock, blue Schellbach stripe

Compact-Burettes, BLAUBRAND®, class AS, Boro 3,3, DE-M, amber, with PTFE stopcock

Compact-Burettes, SILBERBRAND, class B, Boro 3,3, with PTFE stopcock, black Schellbach stripe

Compact-Burettes 'economy', SILBERBRAND, class B, Boro 3,3, with PTFE stopcock

Compact-Burettes, SILBERBRAND, class B, Boro 3,3, amber, with PTFE stopcock