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Thumbnail Filmstrip of White PTFE/White Silicone 20x3mm Vial Septa, 100/Pk Images
White PTFE/White Silicone 20x3mm Vial Septa, 100/Pk - CV1985
Precision-cut to exact dimensional specifications, Tisch CV1985 septa deliver consistent compression and seal performance across crimp, snap, and screw-thread closure systems. Dimensional precision ensures uniform compression within the cap shell, preventing the uneven seal gaps that cause sample evaporation or atmospheric oxygen ingress. Altogether, stringent manufacturing tolerances across vials, caps, and septa ensure that every component in the sample containment chain performs to the specifications modern analytical methods demand.
From tray loading through the final injection in an overnight sequence, your sample containment system should perform without introducing the variables your method is designed to control. 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 | 20mm Crimp Caps — Silver Aluminum and Blue Magnetic |
| Vials | 20mm Headspace Clear and Amber Glass Vials (10mL, 20mL) |
| Platform | Headspace GC Autosamplers |
- Color
- White/ Whtie Septa
- Construction
- Silicone
- Diameter
- 20mm
- Dimensions
- 20mm x 3mm
- Pack Count
- 100
- Septa Material
- Silicone/ PTFE
- Sterility
- Nonsterile
- Weight
- 0.29
- Low-Extractable Requirements - Inert PTFE contact surface minimizes septum-derived contaminant peaks that interfere with trace-level baselines.
- HPLC Mobile Phase Contact - PTFE sample-contact layer provides chemical inertness across acidic, basic, and organic mobile phase conditions.
- Multiple Injection Sequences - Reseal-engineered construction maintains gas-tight closure integrity through repeated autosampler needle punctures.
- Temperature-Cycled Storage - Operating range of -60 to 200 degrees Celsius accommodates refrigerated storage through elevated-temperature methods.
- Light-Sensitive Samples - Pre-slit configurations reduce coring and particulate generation during needle penetration of amber vial closures.
- Volatile Compound Analysis - Leak-resistant seal prevents analyte evaporation losses during extended autosampler queue wait times before injection.