Manufactured from heat resistant borosilicate 3.3 glass according to DIN EN ISO 1042 standard. Calibrated according to DIN/ISO Class “A” standard. Featured with a (“DE-M”) conformity mark according to German federal weights and measures regulations.

Individual calibration carried out by automatic robots eliminate possible deviations from nominal values. Conformity mark and batch number printed on the body surface. Batch certificate can be downloaded from website. Diamond grinded meniscus ring mark offers longer persistence. Blue colored meniscus ring mark enables easy observation of meniscus level. Inscriptions on the bodies are printed with blue enamel color. Flasks are supplied with a leak-proof P.E stopper which ensures perfect closure.