PYREX Boiling Flasks

These PYREX® Boiling Flasks have full length outer 24/40 Standard Taper joints, but with shorter necks. They are manufactured from No. 7740 borosilicate glass and have carefully controlled wall thicknesses to provide the proper balance between thermal expansion and mechanical strength for greater shock resistance. Their excellent chemical durability results in contamination-free results and long life under the toughest lab conditions. The normal working temperature for PYREX® boiling flasks is 230°C.

Key Features

  • Carefully controlled wall thicknesses
  • Excellent chemical durability
  • Available in round or flat bottom

Filter
Item No. Alt. Part No. Volume Bottom Type Unit of Measure Your Cost Purchase
4100 FLASK 500 12/CS
CGW4100-500
EF8600C 500mL Flat Case of 12
$396.40
Add to Cart 11 In Stock 11 In Stock
4320 FLASK 500 12/CS
CGW4320-500
EF8640Z 500mL Round Case of 12
$384.90
Add to Cart This item is not currently stocked. Allow 1-2 weeks. Please call us at 800-328-8378 if you'd like us to keep stock in the future In Stock
4320 FLASK 250 12 CS
CGW4320-250
EF8640U 250mL Round Case of 12
$358.16
Add to Cart This item is not currently stocked. Allow 1-2 weeks. Please call us at 800-328-8378 if you'd like us to keep stock in the future In Stock
4100 FLASK 250 12/CS
CGW4100-250
EF8600B 250mL Flat Case of 12
$427.37
Add to Cart This item is not currently stocked. Allow 1-2 weeks. Please call us at 800-328-8378 if you'd like us to keep stock in the future In Stock
4320 FLASK 1000 12/CS
CGW4320-1L
EF8640BB 1000mL Round Case of 12
$456.47
Add to Cart This item is not currently stocked. Allow 1-2 weeks. Please call us at 800-328-8378 if you'd like us to keep stock in the future In Stock