You are about to set up an account. For this process, you will be asked to provide personal information about yourself and possibly your organization. We invite you to read our Privacy Policy concerning any use of this information that you provide to us.

Benefits of setting up an Account:
  • Allows personalized content such as Favorite Items to be viewed.
  • Conveniently stores information to be used at checkout, such as billing and shipping addresses (Payment information is never stored on the website).
  • Get customized pricing for your organization (when available).

Join Our Mailing List!

Preferred Email Format

* Required

Advanced Search

Corning® Pyrex® Pear-Shaped Boiling Flasks

By Corning
Corning® Pyrex® Pear-Shaped Boiling Flasks

These Pyrex® pear-shaped boiling flasks have full length outer ST joints and are manufactured from No. 7740 borosilicate glass. Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for greater shock resistance. The normal working temperature for Pyrex® boiling flasks is 230°C. Adapter Cat.Nos. 1-8800, 1-8820 and 1-8825 are used to connect flasks with different size joints, thus allowing numerous combinations for diverse assemblies. With short necks. Reusable.

Pyrex® Pear-Shaped Boiling Flasks with ST 14/20 Joint

Cat.No. Brand Material Name Capac. Stopper Number, ST O.D. Height CS    
1-4315-5 Pyrex® Borosilicate glass 5mL 14/20 25mm 50mm DISCONTINUED  
1-4315-6 Pyrex® Borosilicate glass 6mL 14/20 24mm 55mm DISCONTINUED  
1-4315-15 Pyrex® Borosilicate glass 15mL 14/20 32mm 63mm DISCONTINUED  
1-4315-20 Pyrex® Borosilicate glass 20mL 14/20 38mm 66mm DISCONTINUED  
1-4315-35 Pyrex® Borosilicate glass 35mL 14/20 46mm 80mm DISCONTINUED  
1-4315-65 Pyrex® Borosilicate glass 65mL 14/20 53mm 86mm DISCONTINUED  
1-4315-75 Pyrex® Borosilicate glass 75mL 14/20 55mm 80mm DISCONTINUED  
1-4315-100 Pyrex® Borosilicate glass 100mL 14/20 60mm 115mm $56.58
Add To Favorites

Pyrex® Pear-Shaped Boiling Flasks with ST 19/22 Joint

Cat.No. Brand Material Name Capac. Joint Size O.D. Height CS    
1-4316-25 Pyrex® Borosilicate glass 25mL 19/22 40mm 79mm DISCONTINUED  
1-4316-100 Pyrex® Borosilicate glass 100mL 19/22 40mm 79mm DISCONTINUED  

Pyrex® Pear-Shaped Boiling Flasks with ST 24/40 Joint

Cat.No. Brand Material Name Capac. Joint Size O.D. Height CS    
1-4318-50 Pyrex® Borosilicate glass 50mL 24/40 50mm 100mm $44.60
Add To Favorites
1-4318-100 Pyrex® Borosilicate glass 100mL 24/40 65mm 120mm DISCONTINUED  
1-4318-150 Pyrex® Borosilicate glass 150mL 24/40 70mm 135mm DISCONTINUED  
1-4318-200 Pyrex® Borosilicate glass 200mL 24/40 76mm 140mm DISCONTINUED  
1-4318-250 Pyrex® Borosilicate glass 250mL 24/40 83mm 152mm $59.96
Add To Favorites

The following items have been added to your cart:

Choose a favorite list for this item:

Catalog Number Description Price

Request Literature

Please fill out the form below if you want to request literature from Krackeler Scientific.


Quick Order

* Required

New Year Price Updates

We are currently working diligently to update our website pricing information for the New Year. If you place an order, you will be acknowledged with any corrected pricing. If you'd like the most current information sooner, please don't hesitate to drop us an email or give us a call and we'd be happy to assist. Thank you for your patience while we are updating.


Play Video

To Request a Quote

  1. Search or Browse for items and add to them to your Shopping Cart.
  2. Click the "Request Quote" button at the bottom of the Shopping Cart page.
  3. Fill out required fields.
  4. Optionally you can convert to standard checkout mode by choosing a payment type.
  5. Click "Request Quote" at the bottom of the page.

You will be contacted with a quote.

To Order From a Quote

  1. Register and login to the website.
  2. Receive a quote from your sales representative or customer service.
  3. Have your copy of the quote in hand.
  4. Visit our quote module to search for your quote.
Back to Top