Product Description
Keep siloxane ghost peaks out of sensitive chromatograms. These 11 mm crimp caps use an ultra-low bleed septum designed for methods where background contamination from the closure could compromise detection limits or quantitation. They fit standard 11 mm crimp top vials and common crimping tools.
This listing is for MicroLiter catalog number 11-0039A: µL 11 mm Crimp Cap with ULTRAPure Septa, With Slit, Pack of 100. Each natural 11 mm aluminum seal holds a friction-fit septum of blue/teal silicone laminated to white PTFE film, 1 mm thick. Choose a version without a slit for maximum sealing or with a slit for easier needle penetration and pressure relief during sampling. LIGHT LABS ships genuine DWK Life Sciences products with knowledgeable support from our Englewood, Colorado team.
Key Features
- Ultra-low bleed silicone – Designed to minimize siloxane background.
- PTFE face – Inert white PTFE contacts the sample.
- Slit or unslit – Choose sealing performance or easier piercing.
- Aluminum seal – Crimps securely onto 11 mm vials.
Specifications
| Catalog Number | 11-0039A |
| Brand | MicroLiter (DWK Life Sciences) |
| Description | µL 11 mm Crimp Cap with ULTRAPure Septa, With Slit |
| Sold As | Pack of 100 |
| Seal Size | 11 mm |
| Seal Material | Aluminum, natural |
| Septa | PTFE / blue-teal silicone, 1 mm |
Available Options
Applications
- GC-MS trace analysis
- LC-MS methods
- Pharmaceutical impurity testing
- Low-background autosampler runs
