9mm Open Top Screw Cap, Blue with 1mm thick Polyimide/Silicone Septa for PFAS Testing

When you are unable to use PTFE as a liner - these are the perfect alternative. The usable temperature range of this new closure is up to 130°C, and is suitable for up to 10 injections. Polyimide is amber-coloured translucent, and the white silicone rubber is a high-purity rubber composition, which reduces leaching.