1) Description
This polyimide/silicone septa is the perfect alternative when PTFE septa is not possible in certain laboratory environments. Because PFAS and polyfluoroalkyl substances do not break down, they can accumulate in the environment and in the human body over time. There is growing evidence that exposure to PFAS can adversely affect human health. As a result, regulators are increasingly legislating to require testing of many materials to ensure they do not contain traces of PFAS, or that levels are below permissible legal limits. Since PFAS is widely used in materials commonly used in chemical analysis consumables, such as PTFE, these polyimide/silicone septa are a good alternative.
2) Application
HPLC and GC Autosampler Analysis
Open top caps are used where high-throughput sample analysis via an autosampler is required. This design allows the sampler needle of the autosampler to pass directly through the opening in the cap to extract the sample in the bottle without manually opening the vial cap, improving the efficiency and accuracy of analysis. For laboratories that conduct a large number of sample tests, the use of open top caps with automatic samplers can significantly improve the speed and repeatability of sample processing and reduce human errors during operation.
3)Features
▶ High-quality Materials: Made of Polyimide/Silicone material, Polyimide is a high-performance plastic with excellent high temperature resistance. It can maintain stable physical and chemical properties over a wide temperature range and is suitable for high temperature operating conditions. Polyimide also has good radiation resistance and abrasion resistance, making it suitable for use in harsh environments.
▶ Excellent Sealing Performance: The blue 9-425 open top cap, with ribbed design, provides extra grip to ensure the lid is easy to tighten and open while maintaining an excellent seal.
▶ Double-layer Septa Design: The polyimide and red silicone Septa combines the excellent high temperature resistance of polyimide with the excellent sealing and elasticity of silicone to provide double protection for the sample.
▶ Easy to Identify: The distinctive blue cap and red and white Septa design facilitate laboratory management and quick identification, improving work efficiency.
▶ Wide Compatibility: suitable for most 9-425 screw-top vials to meet the needs of different laboratory applications.

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