All BLAUBRAND® burettes, automatic burettes and bulb pipettes are supplied with a batch number and an accompanying batch certificate in the original packaging. On request, they are also available with an individual certificate, USP individual certificate or DAkkS calibration certificate.BLAUBRAND®, class AS, Boro 3.3, DIN EN ISO 385. DE-M marking. Calibrated to deliver (»TD«, »Ex«). Schellbach-stripe. Automatic zeroing Intermediate. stopcock 4 NS / 19 for recirculating residual liquid. Ring marks at major graduations. Marks and inscriptions in high contrast blue enamel.
Available with needle valve stopcock with PTFE spindle (PTFE key in intermediate stopcock) or STJ glass stopcock (glass key in intermediate stopcock).
Supplied without bottle and rubber bellow.