These 500 mL PYREX® volumetric flasks are calibrated to Class A tolerances in accordance with ASTM E-542 and E-288. Supplied with No. 19 Standard Taper glass stoppers. For replacement stoppers see No. 7650. The graduation line is sharp and permanen
EcoChoice Claim
I-RECS cover 100% of manufacturing electricity consumption
EcoChoice Narrative
One or more facilities manufacturing this product is 100% covered by renewable energy through the purchase of unbundled energy attribute certificates (EACs).