Product Description
A flask that stands on its own frees up clamps and makes setups more stable. These flat-bottom boiling flasks sit securely on the bench or a hotplate while connecting directly to 24/40 glassware. They are a practical everyday choice for heating, reflux and distillation.
This listing is for Kimble catalog number 25055-500: KONTES Flat Bottom Short Neck Boiling Flask, 500 mL, Case of 12. Each flask is designed to ASTM E1403 Type I, Class IV and made from low-extractable, 33 expansion borosilicate glass meeting USP Type I and ASTM E438 Type I, Class A. The short neck ends in a 24/40 standard taper joint. Sizes are 250, 300, 500 and 1000 mL, packed in cases of 12. LIGHT LABS supplies the complete DWK Life Sciences line, including Kimble, Wheaton and DURAN labware.
Key Features
- Flat bottom – Stands upright without a support ring.
- 24/40 joint – Connects to condensers and adapters.
- Short neck – Compact profile for tight setups.
- ASTM E1403 – Type I, Class IV design.
Specifications
| Catalog Number | 25055-500 |
| Brand | Kimble (DWK Life Sciences) |
| Description | KONTES Flat Bottom Short Neck Boiling Flask, 500 mL |
| Sold As | Case of 12 |
| Material | Borosilicate glass, 33 expansion |
| Glass type | USP Type I; ASTM E438 Type I, Class A |
| Standard | ASTM E1403, Type I, Class IV |
| Joint | 24/40 standard taper |
| Bottom | Flat |
Available Options
- 25055-1000 – KONTES Flat Bottom Short Neck Boiling Flask, 1000 mL, Case of 12
- 25055-300 – KONTES Flat Bottom Short Neck Boiling Flask, 300 mL, Case of 12
- 25055-250 – KONTES Flat Bottom Short Neck Boiling Flask, 250 mL, Case of 12
Applications
- Heating and reflux
- Distillation
- Solution preparation
- Organic synthesis
