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PYREX™ Flasks Serialized and Certified with standard taper Barrelhead Stopper

Calibrated to Class A tolerances in accordance with ASTM™ E-542 and E-288

Manufacturer: corning incorporated  C5680250

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Catalog No. 10-211E


Description & Specifications


Material Pyrex
Bottom Shape Flat
Calibration To contain
Capacity (Metric) 250mL
Certifications/Compliance NIST, ASTM E542, ASTM E288
Diameter (Metric) Outer 78mm
Diameter (English) Outer 3 in.
Graduated Yes
Height (Metric) 25.3cm
Height (English) 9.96 in.
Neck Style Long
Stopper Material Glass
Stopper Number 16
Tolerance ±0.1mL


  • The graduation line is sharp and permanent and large white block letters make the inscription easy to read

PYREX Serialized/Certified Volumetric Glassware is now tested and calibrated in an ISO/IEC 17025 certified laboratory