Product Description
Give microscale reactions extra headspace and clearance from heating blocks with a long neck 5 mL flask. The longer neck helps keep refluxing vapor contained and moves connectors away from the heat source. That makes them a dependable choice for reactions that boil vigorously or need extended reflux times.
This listing is for Kimble catalog number 748009-0005: KONTES Long Neck Flask 5 mL, Case of 10. These flasks are made from 33 expansion, low extractable borosilicate glass meeting USP Type I and ASTM E438, Type I, Class A, and are supplied in a case of 10. They serve as replacement parts for microscale kits such as the Williamson series and as stock vessels for small-scale reactions in teaching and research labs. LIGHT LABS ships genuine DWK Life Sciences products with knowledgeable support from our Englewood, Colorado team.
Key Features
- Long neck – Adds clearance and vapor headspace.
- 5 mL capacity – Sized for microscale work.
- Low extractable glass – USP Type I and ASTM E438, Type I, Class A.
- Case of 10 – Practical for restocking kits.
Specifications
| Catalog Number | 748009-0005 |
| Brand | Kimble (DWK Life Sciences) |
| Description | KONTES Long Neck Flask 5 mL |
| Sold As | Case of 10 |
| Glass | Type I, 33 expansion borosilicate glass |
| Standards | USP Type I; ASTM E438, Type I, Class A |
| Neck | Long |
Applications
- Microscale reflux
- Williamson kit replacement parts
- Small-scale synthesis
