Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11093-02 Plunger, 2/pk Price on request CTS-12013 Tungsten Lamp (1000 hr) Price on request CTS-21406 Peristaltic Pump Cartridge, WPS/AC Price on request