Automatic burettes, Pellet pattern, boro 3.3, amber, class B, with intermediate stopcock

SILBERBRAND.
25 ml: Class B, Tolerance to DIN EN ISO 385.
50 ml: Class B, to DIN EN ISO 385.
Automatic zero point setting. Graduations and inscriptions in white enamel. Intermediate stopcock for evacuation of remaining liquid. Calibrated to deliver (EX). With PTFE-key in the titration and intermediate stopcock.