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PYREX™ Class B Flasks with standard taper Stopper

Calibrated “To Contain” at 20°C (68°F)

Manufacturer: corning incorporated  C564125

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Catalog No. 10-206B


Description & Specifications


Material Pyrex
Bottom Shape Flat
Calibration To contain
Capacity (Metric) 25mL
Diameter (Metric) Outer 40mm
Diameter (English) Outer 1.5 in.
Graduated Yes
Height (Metric) 12cm
Height (English) 4.76 in.
Neck Style Long
Stopper Number 9
Tolerance ±0.06mL

  • Meet tolerance requirements listed in Class B Volume Tolerances chart
  • Glass stopper
  • Stopper standard taper sizes: 9 (10, 25, 50mL); 13 (100, 200mL); 16 (250mL); 19 (500mL); 22 (1000mL); 27 (2000mL)