Product Description
Caps that soften or deform under heat can compromise a sample seal. These glass-filled polypropylene caps offer greater heat resistance than standard polypropylene, making them a dependable choice for EPA sample vials. The bonded septum also stays in place when the cap is removed and reapplied.
This listing is for Wheaton catalog number W224600: Glass Filled Polypropylene Screw Cap, 24-400, Case of 200. Each white open-top cap fits a 24-400 finish and has a PTFE/silicone septum bonded in place, 0.005 in. PTFE over 0.120 in. silicone. The open top allows direct needle access through the septum without removing the cap. Caps are supplied 200 per case. Add it to your LIGHT LABS order alongside the rest of your glassware and closures.
Key Features
- Glass-filled polypropylene – Higher heat resistance than standard PP caps.
- Bonded septum – PTFE/silicone septum stays in place.
- Open top – Allows needle sampling through the septum.
- 24-400 finish – Fits standard EPA vials.
- Suited to EPA work – Ideal for environmental water samples.
Specifications
| Catalog Number | W224600 |
| Brand | Wheaton (DWK Life Sciences) |
| Description | Glass Filled Polypropylene Screw Cap, 24-400 |
| Sold As | Case of 200 |
| Material | Glass-filled polypropylene, white |
| Thread finish | 24-400 |
| Style | Open top |
| Septum | Bonded PTFE/silicone, 0.005 in. PTFE / 0.120 in. silicone |
Applications
- EPA VOA vial sealing
- Environmental water sampling
- Volatile organic analysis
- Purge and trap sample storage
