Automatic burettes, Pellet pattern, borosilicate glass 3.3, with stopcock, Class AS, without bottle
Blaubrand®. Class AS, to DIN EN ISO 385. Boro 3.3. With intermediate stopcock. DE-M marking. With batch number. Graduations and inscriptions in highly contrasting blue enamel. With Schellbach stripes. Intermediate stopcock allows residual reagent in the burette after titration to be recycled into the reservoir. Automatic zero point setting. Calibrated to deliver (EX). Choice of models, either with needle-valve stopcock with PTFE spindle (intermediate stopcock with PTFE-key) or with NS glass stopcock (intermediate stopcock with glass key).
All Blaubrand® burettes are delivered with batch number and one batch certificate included per pack. Also available with individual works, USP or DAkkS (former DKD) calibration certificate, please enquire. The batch certificate is also available to download from the manufacturer's website.

Specifications
Capacity: 25 ml
Grading: 0.05 ml
Tolerance: 0.03 ± ml
Stopcock PTFE