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Thumbnail Filmstrip of Pre-Slit White PTFE/Red Silicone 9x1mm Vial Septa, 100/Pk Images
Pre-Slit White PTFE/Red Silicone 9x1mm Vial Septa, 100/Pk - CV1803
PTFE-lined chromatography septa from Tisch provide the chemical inertness and reseal integrity required for reliable autosampler injection across multiple needle punctures. Dimensional precision ensures uniform compression within the cap shell, preventing the uneven seal gaps that cause sample evaporation or atmospheric oxygen ingress. To this end, 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.
Your chromatographic results depend on the integrity of every seal, every vial surface, and every needle penetration — precision that starts with the consumables you select. 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 | 9mm Short Thread Screw Caps — Blue, Black (Polypropylene) |
| Vials | 9mm Short Thread Clear and Amber Glass Vials (1.5mL, 0.3mL) |
| Thread | Short Thread / ND9 |
- Color
- White/ Red Septa
- Construction
- Silicone
- Diameter
- 9mm
- Dimensions
- 9mm x 1mm
- Pack Count
- 100
- Septa Material
- Silicone/ PTFE
- Sterility
- Nonsterile
- Weight
- 0.03
- 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.
- HPLC Mobile Phase Contact - PTFE sample-contact layer provides chemical inertness across acidic, basic, and organic mobile phase conditions.
- Volatile Compound Analysis - Leak-resistant seal prevents analyte evaporation losses during extended autosampler queue wait times before injection.
- 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.