Product Description
Screw-on headspace caps remove the need for crimping tools while still giving a secure seal for volatile samples. These 18 mm magnetic screw caps are compatible with magnetic transport autosamplers, speeding up preparation of headspace vials. They also reduce hand strain compared with repeated manual crimping.
This listing is for Wheaton catalog number W224220: Headspace Screw Thread Closure, Red PTFE / White Silicone Septa, Case of 100. Each cap is magnetic for autosampler handling and fitted with a septum. Choose white PTFE with transparent blue silicone, PTFE with butyl, or red PTFE with white silicone to suit your method and temperature needs. Simply thread the cap onto an 18 mm screw-thread headspace vial. Caps are supplied 100 per case. Add it to your LIGHT LABS order alongside the rest of your glassware and closures.
Key Features
- Screw thread finish – No crimping tools required.
- Magnetic cap – Compatible with magnetic transport autosamplers.
- Three septa choices – PTFE/silicone or PTFE/butyl combinations.
- 18 mm size – Fits 18 mm screw-thread headspace vials.
Specifications
| Catalog Number | W224220 |
| Brand | Wheaton (DWK Life Sciences) |
| Description | Headspace Screw Thread Closure, Red PTFE / White Silicone Septa |
| Sold As | Case of 100 |
| Size | 18 mm |
| Closure type | Magnetic screw cap |
| Septa options | White PTFE/transparent blue silicone; PTFE/butyl; red PTFE/white silicone |
Available Options
- W224218 – Headspace Screw Thread Closure, White PTFE / Transparent Blue Silicone Septa, Case of 100
- W224219 – Headspace Screw Thread Closure, PTFE / Butyl Septa, Case of 100
Applications
- Headspace GC analysis
- Residual solvent testing
- Volatile compound analysis
- Environmental VOC screening
