Product Description
Scale reactions down without giving up the familiar round bottom geometry that heats evenly and stirs well. These small threaded flasks bring standard boiling flask performance to microscale work, cutting reagent cost and waste in both teaching and research settings. They fit neatly into heating blocks and sand baths.
This listing is for Kimble catalog number 746120-0005: KONTES Threaded Round Bottom Boiling Flasks, 5 mL. Each flask is made from 33 expansion, low extractable borosilicate glass meeting USP Type I and ASTM E438, Type I, Class A, with a 14/10 joint. It comes with a blue glass-filled nylon cap, a PTFE/silicone septum and an ethylene propylene O-ring for sealed operation. Capacities of 5, 10 and 25 mL are offered. LIGHT LABS ships genuine DWK Life Sciences products with knowledgeable support from our Englewood, Colorado team.
Key Features
- Round bottom – Even heating and efficient stirring at small scale.
- Sealed closure included – Blue glass-filled nylon cap, PTFE/silicone septum and EP O-ring.
- 14/10 joint – Compatible with threaded microscale glassware.
- Three sizes – 5, 10 and 25 mL capacities.
- Low extractable glass – Meets USP Type I and ASTM E438, Type I, Class A.
Specifications
| Catalog Number | 746120-0005 |
| Brand | Kimble (DWK Life Sciences) |
| Description | KONTES Threaded Round Bottom Boiling Flasks, 5 mL |
| Sold As | Each |
| Glass | Type I, 33 expansion borosilicate glass |
| Standards | USP Type I; ASTM E438, Type I, Class A |
| Joint size | 14/10 |
| Cap | Blue glass-filled nylon |
| Septum | PTFE/silicone |
| O-ring | Ethylene propylene |
Available Options
- 746120-0010 – KONTES Threaded Round Bottom Boiling Flasks, 10 mL
- 746120-0025 – KONTES Threaded Round Bottom Boiling Flasks, 25 mL
Applications
- Microscale reflux
- Small-scale synthesis
- Microscale distillation
- Septum-sealed reactions
