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Thumbnail Filmstrip of Pre-Slit Red PTFE/White Silicone 9x1mm Vial Septa, 100/Pk Images
Pre-Slit Red PTFE/White Silicone 9x1mm Vial Septa, 100/Pk - CV1804
Engineered with a chemically inert PTFE contact layer, Tisch CV1804 vial septa prevent sample interaction with the seal material during storage and injection. Pre-slit variants reduce needle coring by providing a defined penetration path, extending the effective puncture life and reducing particulate generation in the sample. Altogether, consistent production quality eliminates the containment variables that compromise injection precision, supporting validated analytical performance at every step.
When your analytical methods require consistent sample containment from preparation through injection, every component in the closure system matters. 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
- Red/ White 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.
- Multiple Injection Sequences - Reseal-engineered construction maintains gas-tight closure integrity through repeated autosampler needle punctures.
- Low-Extractable Requirements - Inert PTFE contact surface minimizes septum-derived contaminant peaks that interfere with trace-level baselines.
- 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.