PTFE Diaphragm, 2/pk Back Catalog number: 11-2891 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A159 Inlet Check Valve Price on request CTS-A11381 Needle, SS, 30μL Price on request CTS-21164 Rotor Seal, 6 port, Rear Price on request