Corning® 4321A-250 PYREX® 250mL Round Bottom Boiling Flask with Short Neck & 14/20 [ST] Joint

NOTICE: While we make every effort to accurately report lead times, unfortunately, Corning products often have a prolonged ship date/lead time. Please be aware before ordering this Corning item.

Cancelled orders will incur a 10% cancellation fee imposed by Corning, so keep this in mind before ordering.
  • Boiling flask has a capacity of 250mL, with a height of 114mm and an outer diameter of 83mm
  • Round bottom flask has a full length outer 14/20 standard taper joint, but with a shorter neck
  • Made of borosilicate glass code 7740; normal working temperature is 230°C
  • Wall thickness is carefully controlled to provide proper balance between thermal expansion and mechanical strength for greater shock resistance
  • Reusable with excellent chemical durability for contamination-free results and long life; replacement part for organic chemistry kit Corning® Item Number 6949K
  • Sold individually
  • Manufacturer Part No: COR-4321A-250
(0) No Reviews yet

PLEASE NOTE: Product images and descriptions may not exactly represent the product. Prior to making your purchase, please confirm that the manufacturer part number shown above matches the product you seek. Returns are not allowed for such differences if the correct manufacturer part number is shipped.

Item Number: COR-4321A-250
$59.02

Sold in: Eaches

UnitMSRPYour PriceStock StatusQty
Each63.0259.02Lead Time

New

Details

This PYREX® round bottom boiling flask has a full length outer 14/20 standard taper joint, but with a shorter neck. Wall thickness is carefully controlled to provide the proper balance between thermal expansion and mechanical strength for greater shock resistance. Excellent chemical durability results in contamination-free results and long life under the toughest lab conditions. Normal working temperature for this PYREX® boiling flask is 230°C. Adapters are available to connect flasks with different size joints, thus allowing numerous combinations for diverse assemblies (sold separately). This flask is a replacement part for organic chemistry kit Corning® Item Number 6949K. Non-Sterile. Reusable. Material: Borosilicate Glass Code 7740. Capacity: 250mL. Flask Style: Boiling. Flask Shape: Round Bottom. Top Style: Standard Taper Joint. Neck Style: Short. Stopper Style: No Stopper. Standard Taper Joint: 14/20. Height: 114mm. Outer Diameter: 83mm. Corning® #: 4321A-250.

Documents & Videos

This PYREX® round bottom boiling flask has a full length outer 14/20 standard taper joint, but with a shorter neck. Wall thickness is carefully controlled to provide the proper balance between thermal expansion and mechanical strength for greater shock resistance. Excellent chemical durability results in contamination-free results and long life under the toughest lab conditions. Normal working temperature for this PYREX® boiling flask is 230°C. Adapters are available to connect flasks with different size joints, thus allowing numerous combinations for diverse assemblies (sold separately). This flask is a replacement part for organic chemistry kit Corning® Item Number 6949K. Non-Sterile. Reusable. Material: Borosilicate Glass Code 7740. Capacity: 250mL. Flask Style: Boiling. Flask Shape: Round Bottom. Top Style: Standard Taper Joint. Neck Style: Short. Stopper Style: No Stopper. Standard Taper Joint: 14/20. Height: 114mm. Outer Diameter: 83mm. Corning® #: 4321A-250.

Ratings & Reviews

No reviews available

Be the first to Write a Review