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Thumbnail Filmstrip of Gray PTFE/Pharma-fix Butyl 20x3mm Vial Septa, 100/Pk Images
Gray PTFE/Pharma-fix Butyl 20x3mm Vial Septa, 100/Pk - CV1991
Engineered with a chemically inert PTFE contact layer, Tisch CV1991 vial septa prevent sample interaction with the seal material during storage and injection. Flexible backing layer provides the mechanical compliance needed for clean needle penetration and self-sealing recovery, maintaining a gas-tight closure through repeated punctures. As designed, consistent production quality eliminates the containment variables that compromise injection precision, supporting validated analytical performance at every step.
Whether running routine QC sequences or method development campaigns, your confidence in sample integrity begins with the vial system on the autosampler tray. 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
- Amber
- 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.
- 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.
- Low-Extractable Requirements - Inert PTFE contact surface minimizes septum-derived contaminant peaks that interfere with trace-level baselines.
- Multiple Injection Sequences - Reseal-engineered construction maintains gas-tight closure integrity through repeated autosampler needle punctures.