PP Screw Cap with Septa in 9mm for THERMO FISHER
The polypropylene screw cap with diaphragm prevents evaporation and is highly sealed. The double layer includes silicone and PTFE. The 9mm screw cap has a shorter thread, which shortens the sealing time. The silicone septum can be injected multiple times. Screw caps lined with PTFE are used for organic samples. The screw cap provides an inert air-tight seal and can be directly pierced through the sample with a syringe needle.