Volumetric flask, PPCO, 250 ml with PP-screw closure dia. 20mm 12 pc, 12 pc/PAK

Combines the accuracy of standard glass flasks with the break resistance of plastic. Each volumetric flask is individually gravimetrically calibrated at 20°C on spout and neck. Imprint is durable, does not wear off. Guaranteed to meet the accuracy requirements of ASTM standard E288 and ISO standard 384. Volume can be read quickly and accurately without meniscus formation. Oval marking surface. Before autoclaving, unscrew the cap and place loosely on the neck. Autoclavable / graduation / leak-proof