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Thumbnail Filmstrip of Gray PTFE/Moulded Butyl 20x3mm Vial Septa, 100/Pk Images
Gray PTFE/Moulded Butyl 20x3mm Vial Septa, 100/Pk - CV1990
Engineered with a chemically inert PTFE contact layer, Tisch CV1990 vial septa prevent sample interaction with the seal material during storage and injection. Dimensional precision ensures uniform compression within the cap shell, preventing the uneven seal gaps that cause sample evaporation or atmospheric oxygen ingress. Altogether, consistent production quality eliminates the containment variables that compromise injection precision, supporting validated analytical performance at every step.
Reliable injection-to-injection reproducibility in your chromatographic workflow starts with consumables engineered to maintain dimensional and chemical consistency across every lot. PTFE chemical inertness at the sample contact surface keeps your chromatographic baseline clean, while the flexible backing delivers reliable reseal performance through repeated injections. Eliminate sample containment as a source of analytical uncertainty by choosing chromatography consumables manufactured to the tolerances your instruments require.
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
- Clear
- Diameter
- 20mm
- Dimensions
- 20mm x 3mm
- Pack Count
- 100
- Septa Material
- Buytl/ PTFE
- Sterility
- Nonsterile
- Weight
- 0.29
- Light-Sensitive Samples - Pre-slit configurations reduce coring and particulate generation during needle penetration of amber vial closures.
- 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.
- Volatile Compound Analysis - Leak-resistant seal prevents analyte evaporation losses during extended autosampler queue wait times before injection.
- 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.