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Thumbnail Filmstrip of White PTFE/Red Silicone 8x2mm Vial Septa, 100/Pk Images
White PTFE/Red Silicone 8x2mm Vial Septa, 100/Pk - CV1839
Precision-cut to exact dimensional specifications, Tisch CV1839 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. In turn, standardized dimensional compliance across the full product line enables confident cross-platform deployment without instrument-specific qualification testing.
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. Eliminate sample containment as a source of analytical uncertainty by choosing chromatography consumables manufactured to the tolerances your instruments require.
Compatible Chromatography Components
| Caps | 8mm Screw Caps — Black, White (Polypropylene) |
| Vials | 8mm Screw Thread Clear and Amber Glass Vials (1.5mL, 1mL) |
| Thread | 8-425 / ND8 |
- Color
- White/ Red Septa
- Diameter
- 8mm
- Dimensions
- 8mm x 1.5mm
- Pack Count
- 100
- Septa Material
- Silicone/ PTFE
- Sterility
- Nonsterile
- Weight
- 0.03
- Multiple Injection Sequences - Reseal-engineered construction maintains gas-tight closure integrity through repeated autosampler needle punctures.
- 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.
- HPLC Mobile Phase Contact - PTFE sample-contact layer provides chemical inertness across acidic, basic, and organic mobile phase conditions.
- Light-Sensitive Samples - Pre-slit configurations reduce coring and particulate generation during needle penetration of amber vial closures.
- Low-Extractable Requirements - Inert PTFE contact surface minimizes septum-derived contaminant peaks that interfere with trace-level baselines.