## Description With one mark graduation and interchangeable polyethylene stopper. The details on each flask include confirmation of compliance to International Standards as well as an individual re-order code. Capacity 250mL, tolerance 0.15mL, stopper diameter 14/23mm, neck O.D. 17mm. ## Specifications ||| | ------------ | ------------ | |Stopper Material| Polyethylene| |Color| Clear| |Tolerance| ±0.15mL| |Capacity| 250mL| |Material| Borosilicate Glass| |Classification| Class A| |Height| 220mm| |Graduated| Yes| |Certifications| ISO 1042, DIN 12664|