Your Cart (0)
Thumbnail Filmstrip of White PTFE/Blue Transparent Silicone 17.5 x 1.3mm Vial Septa, 100/Pk Images
White PTFE/Blue Transparent Silicone 17.5 x 1.3mm Vial Septa, 100/Pk - CV1994
Precision-cut to exact dimensional specifications, Tisch CV1994 septa deliver consistent compression and seal performance across crimp, snap, and screw-thread closure systems. Flexible backing layer provides the mechanical compliance needed for clean needle penetration and self-sealing recovery, maintaining a gas-tight closure through repeated punctures. For this reason, reliable component compatibility across the chromatography closure system supports reproducible analytical results from sample preparation through final data acquisition.
When your analytical methods require consistent sample containment from preparation through injection, every component in the closure system matters. Precise dimensional cutting ensures uniform compression in the cap shell, giving you the consistent seal that prevents evaporation losses across extended autosampler queues. Ensure your analytical results reflect true sample composition rather than containment variability by selecting vials, caps, and septa built to consistent specifications.
Compatible Chromatography Components
| Caps | 18mm Magnetic Precision Screw Caps (Aluminum) |
| Vials | 18mm Headspace Clear and Amber Glass Vials (10mL, 20mL, Round Bottom) |
| Platform | Headspace GC Autosamplers |
| Thread | 18mm Precision Thread / ND18 |
- Color
- White/ Blue Septa
- Diameter
- 17.5mm
- Dimensions
- 17.5mm x 1.3mm
- Pack Count
- 100
- Septa Material
- Silicone/ PTFE
- Sterility
- Nonsterile
- Weight
- 0.10
- Multiple Injection Sequences - Reseal-engineered construction maintains gas-tight closure integrity through repeated autosampler needle punctures.
- HPLC Mobile Phase Contact - PTFE sample-contact layer provides chemical inertness across acidic, basic, and organic mobile phase conditions.
- Volatile Compound Analysis - Leak-resistant seal prevents analyte evaporation losses during extended autosampler queue wait times before injection.
- Temperature-Cycled Storage - Operating range of -60 to 200 degrees Celsius accommodates refrigerated storage through elevated-temperature methods.
- Low-Extractable Requirements - Inert PTFE contact surface minimizes septum-derived contaminant peaks that interfere with trace-level baselines.
- Light-Sensitive Samples - Pre-slit configurations reduce coring and particulate generation during needle penetration of amber vial closures.