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Thumbnail Filmstrip of Red PTFE/White Silicone 13x1.5mm Vial Septa, 100/Pk Images
Red PTFE/White Silicone 13x1.5mm Vial Septa, 100/Pk - CV1937
Dual-layer construction in Tisch chromatography septa combines PTFE chemical resistance on the sample-contact side with flexible backing for reliable needle penetration and resealing. PTFE sample-contact surface eliminates extractable contamination from the seal, preserving chromatographic baseline integrity across extended autosampler queue sequences. In turn, standardized dimensional compliance across the full product line enables confident cross-platform deployment without instrument-specific qualification testing.
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. Eliminate sample containment as a source of analytical uncertainty by choosing chromatography consumables manufactured to the tolerances your instruments require.
Compatible Chromatography Components
| Caps | 13mm Screw Caps — Black (Polypropylene, Open and Closed Top) |
| Vials | 13mm Screw Thread Clear and Amber Glass Vials (4mL) |
| Thread | 13-425 / ND13 |
- Cap Size
- 13mm
- Color
- Red/ White Septa
- Dimensions
- 13mm x 1.5mm
- Pack Count
- 100
- Septa Material
- Silicone/ PTFE
- Sterility
- Nonsterile
- Weight
- 0.06
- 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.
- Volatile Compound Analysis - Leak-resistant seal prevents analyte evaporation losses during extended autosampler queue wait times before injection.
- 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.