amber vol flask 5ml class a, Pack of 5

Calibrated to the tolerances required by the United States Pharmacopeia (USP), which are tighter than those of ISO/DIN standardsEach flask is laser etched with a unique individual serial number, batch code and date of manufacture - Batch certificates are downloadable from website: www.scilabware.comWhite enamel inscriptions, ideal for use with light sensitive solutions