18mm Magnetic Precision Screw Metal Cap with Septa
1) Basic Information
| Product Name | 18mm Silver Magnetic Screw Top Cap with Septa |
| Cap Material | Metal |
| Cap Thread | 18mm |
| Cap Color | Silver |
| Septa | PTFE/Silicone |
| Septa thickness | 1.5mm |
| Application | For LC/GC |
| Packaging | 100 pcs Packed in one Bag |
2） Product Overview
18 mm silver magnetic metal caps with pre-installed septa are matched with screw headspace vials, optimized for automated lab workflows including autosampler systems.
The magnetic design enables lab automation equipment to grip and manipulate vial caps rapidly, greatly boosting overall lab throughput. Two styles are available: open-top caps for straightforward needle piercing, and closed-top caps for superior airtight sealing. These magnetic caps are perfectly suited for high-throughput, high-precision gas chromatography testing.
The magnetic design enables lab automation equipment to grip and manipulate vial caps rapidly, greatly boosting overall lab throughput. Two styles are available: open-top caps for straightforward needle piercing, and closed-top caps for superior airtight sealing. These magnetic caps are perfectly suited for high-throughput, high-precision gas chromatography testing.
3） Key Features
- Magnetic construction: Fully compatible with automatic sample handling equipment to raise lab efficiency
- Perfect compatibility: Matches 18 mm screw headspace vials and adapts to diverse testing conditions
- Multiple septum selections: Blue, natural and red PTFE/silicone septa available for varied testing requirements
- PTFE/silicone composite septa: Merge the chemical inertness of PTFE and excellent resilience of silicone, protecting sample purity without contamination
- Dual style options (open / closed top): Open caps enable easy autosampler needle penetration; closed caps deliver enhanced sealing tightness
4) Applications
These caps fit all standard 18 mm screw-thread headspace vials and serve GC and HPLC analysis, particularly headspace sampling for extracting volatile analytes from liquid and solid matrices. Typical usage scenarios:
- Environmental Testing: Quantify pollutants within water and soil samples
- Food & Spice Testing: Characterize flavor and aromatic substances in food and seasonings
- Pharmaceutical Manufacturing: Raw material quality control for pharmaceutical ingredients
- General Chemical Testing: Composition and purity analysis of chemical substances
5）Ordering Information
P/N | Description | Pack Of | Image |
COMN-1808RW | 18mm Magnetic Precision Screw Metal Cap, 8mm Centre Hole + Red PTFE/white Silicone Septa | 100 |
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COMN-1808BW | 18mm Magnetic Precision Screw Metal Cap, 8mm Centre Hole + Blue PTFE/white Silicone Septa | 100 |
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COMN-1808NW | 18mm Magnetic Precision Screw Metal Cap, 8mm Centre Hole + Nature PTFE/white Silicone Septa | 100 |
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