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PYREX™ Flasks with standard taper Stoppers

Machine-blown body

Manufacturer: corning incorporated  5640-4L

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Catalog No. 10-210K

  • / Case

Description & Specifications


Capacity 4L
Material Borosilicate Glass
Bottom Shape Flat
Capacity (Metric) 4000mL
Class Class A
Closure Material Glass
Diameter (Metric) Outer 20.5cm
Diameter (English) Outer 8.07 in.
Closure Type Pennyhead stopper
Graduated Yes
Height (Metric) 48cm
Height (English) 18.9 in.
Neck Style Long
Stopper Material Glass
Stopper Number 38
Tolerance ±1mL
Total Count 1Piece

  • High thermal and chemical resistance
  • Sharp, clear graduation lines
  • Calibrated “To Contain” within Class A Tolerances
  • Sizes 1 to 10mL are for microchemistry
  • Sizes 1 and 2mL are test-tube shaped
  • Sizes 3000 to 6000mL have Standard Taper(standard taper) pennyhead stoppers
  • Sizes 1 to 2000mL have Corning™ barrelhead stoppers with flat tops in order to stand the inverted stopper on the table and reduce plug contamination