Suggested products
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Naturkautschuk /TEF | ||
Application: | HPLC/GC | |
• Standard quality for HPLC |
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RedRubber / PTFE (synthetic rubber) | ||
Application: | HPLC/GC | |
• NEW standard quality for HPLC and GC |
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Butyl (septa / stopper) | ||
Application: | Headspace | |
• In the absence of a PTFE coating, only for uncritical analyzes |
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Pharma-Fix Septum Butyl / PTFE | ||
Application: | GC/HPLC/Headspace | |
• Specialty: Pharma-Fix washer only centric PTFE-coated butyl disc; The elastic butyl lying on the glass edge achieves a significantly better seal than the slippery surface of a completely laminated sealing disc |
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(PTFE /) silicone / PTFE | ||
Application: | GC/HPLC/Headspace | |
• Silicone is the purest synthetic elastomer and is therefore used for critical analyzes |
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Silicon / aluminum foil | ||
Application: | Headspace | |
• All chemical and physical properties, such as silicone / PTFE |
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Pure PTFE septa | ||
Application: | HPLC | |
• Very inert, therefore also as a coating on most other sealing discs |
Durometer (hardness of the septum)
Durometer is the hardness of a septum, expressed in ° shore. The higher the "shore" number, the harder the septum, the lower the "shore" number, the softer the septum. The softest sealing disc is 45 ° shore A and the hardest 70 ° shore A is hard. In addition to the thickness of the disc, the hardness is an important indicator, which septum is suitable for the penetration of a certain needles (sensitive needles, thin or thick needles, pointed or blunt needles, etc.).