Volumetric flask class A with plastic stopper, with individual certificate and Q

Made of top quality 3.3 borosilicate glass. Designed according to ISO 1042, DIN 12664 and calibrated to contain (TC, In). The conformity with ''Eichordnung'' (the German Federal Weights and Measures Regulations) is certified through the official ''DE-M (year)'' sign on each flask. Each flask has its own individual serial number printed. An individual calibration certificate showing the real volume of this particular flask is delivered. The flask has a printed QR code that when scanned allows the user to download the certificate