PTFE Diaphragm, 2/pk Back Catalog number: 11-2891 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10985 600/610 Performance Maintenance Kit Price on request CTS-6809 Mobile Phase Transfer Line, TFE, 3/16" OD x 1/8" I Price on request CTS-21586 1100 Series Essential Pack, G1310A/G1311A Pump Price on request