PYREX Volumetric Flask 10ml Class A Works Cer

Calibrated to Class A tolerances and complying to USP, ISO and DIN standards, these volumetric flasks are precision measuring instruments. Each flask is supplied with an individual calibration certificate for complete traceability. Complies with ISO 1042 and DIN 12664 Calibrated to tolerances required by the United States Pharmacopoeia (USP) which are tighter than those of ISO/DIN standards Each flask is engraved with an individual serial number and supplied with certificate of calibration traceable to national standards Manufactured from Pyrex® borosilicate glass for corrosion-free performance White enamel inscriptions Supplied with polyethylene stopper