Product Description
Seal 20 mm crimp top headspace vials with septa chosen for the temperature and chemistry of your method. The right septum limits volatile loss during heated equilibration and keeps background low across long sequences. Stoppers and septa are sold separately from seals.
This listing is for MicroLiter catalog number 20-0030: µL Headspace 20 mm PTFE/Butyl Septa, All, Pack of 100. Options include a gray butyl stopper about 8.4 mm tall, PTFE/butyl (about 3.0 mm), molded PTFE/gray butyl (about 3.5 mm), natural PTFE/blue silicone (about 3.1 mm), tan PTFE/white silicone (about 3.2 mm) and aluminum foil/silicone. Several styles are offered in packs of 100 or 1000. Order it from LIGHT LABS and keep your lab stocked with genuine DWK Life Sciences products.
Key Features
- Butyl stopper – Low gas permeability for volatiles.
- PTFE-faced options – Inert surface toward the sample.
- Silicone choices – Good resealing for multiple punctures.
- Aluminum foil/silicone – Barrier facing for demanding seals.
- Bulk packs – 1000-count options.
Specifications
| Catalog Number | 20-0030 |
| Brand | MicroLiter (DWK Life Sciences) |
| Description | µL Headspace 20 mm PTFE/Butyl Septa, All |
| Sold As | Pack of 100 |
| Size | 20 mm |
| Septa Options | Gray Butyl; PTFE/Butyl; Molded PTFE/Gray Butyl; PTFE/Blue Silicone; PTFE/White Silicone; Aluminum Foil/Silicone |
Available Options
- 20-0025 – µL Headspace 20 mm Buty Stopper, All but LEAP / CTC, Pack of 100
- 20-0025-B – µL Headspace 20 mm Buty Stopper, All but LEAP / CTC, Pack of 1,000
- 20-0040 – µL Headspace 20 mm Molded PTFE / Butyl Septa, All, Pack of 100
- 20-0050 – µL Headspace 20 mm Natural PTFE / Blue Silicone Septa, All, Pack of 100
- 20-0051 – µL Headspace 20 mm Tan PTFE / White Silicone Septa, All, Pack of 100
- 20-0051-B – µL Headspace 20 mm Tan PTFE / White Silicone Septa, All, Pack of 1,000
- 20-0060 – µL Headspace 20 mm Aluminum Foil / Silicone Septa, All, Pack of 100
Applications
- Headspace GC
- Residual solvent analysis
- Blood alcohol testing
- Volatile organics
