Your Cart (0)
Thumbnail Filmstrip of Blue PTFE/White Silicone 17.5 x 1.5mm Vial Septa, 100/Pk Images
Blue PTFE/White Silicone 17.5 x 1.5mm Vial Septa, 100/Pk - CV1992
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. For this reason, consistent production quality eliminates the containment variables that compromise injection precision, supporting validated analytical performance at every step.
Matching the right vial, cap, and septum configuration to your instrument and application ensures that sample containment never becomes a source of analytical uncertainty. Precise dimensional cutting ensures uniform compression in the cap shell, giving you the consistent seal that prevents evaporation losses across extended autosampler queues. Ensure your analytical results reflect true sample composition rather than containment variability by selecting vials, caps, and septa built to consistent specifications.
Compatible Chromatography Components
| Caps | 18mm Magnetic Precision Screw Caps (Aluminum) |
| Vials | 18mm Headspace Clear and Amber Glass Vials (10mL, 20mL, Round Bottom) |
| Platform | Headspace GC Autosamplers |
| Thread | 18mm Precision Thread / ND18 |
- Color
- Blue/ White Septa
- Diameter
- 1.5mm
- Dimensions
- 17.5mm x 1.5mm
- Pack Count
- 100
- Septa Material
- Silicone/ PTFE
- Sterility
- Nonsterile
- Weight
- 0.10
- 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.
- 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.
- 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