This aqua colour screw cap incorporates a pierceable septum made of chemically resistant PTFE on the outside and silicone on the inside, both components being stable over a broad range of temperatures.

• Acts as a silicone O-ring for better sample protection
• Especially made to fit and be used with all Simport® sample tubes

The cap is pierceable with pipette tips as well as with syringe needles.