Premium screw cap, TpCh260 TpCh260 (similar to PFA), with PTFE coated silicone seal. Colourless (to avoid risk of leaching) and temperature resistant from -196 °C to +260 °C. Ideal for dry sterilization. USP/FDA standard conformity. DFM available on request. Autoclavable. With Retrace code (Batch Identification). Certificate available via the internet.