PYREX Volumetric Flask 20ml Class A Works Certified-(ELS-FLA73040)

PYREX Volumetric Flask 20ml Class A Works Certified - 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 the tolerances required by the United States Pharmacopoeia (USP) which are tighter than those of ISO/DIN standards Each flask engraved with individual serial number and supplied with certificate of calibration traceable to National standards Conformity ‘H’ certified Manufactured from borosilicate glass for corrosion-free performance White enamel inscriptions Polyethylene stopper