Manufactured from heat resistant neutral 5.4 glass. Calibrated according to Class “A” standard. They guarantee excellent protection against UV source and still good visibility of liquid level. Individual calibration carried out by automatic robots eliminate possible deviations from nominal values. Conformity mark and batch number printed on the body surface. Diamond grinded meniscus ring mark offers longer persistence. White colored meniscus ring mark enables easy observation of meniscus level. Inscriptions on the flask bodies are printed with white enamel color. All flasks are supplied with a leakproof P.E stopper which ensures perfect closure.

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