Peristaltic Pump Cartridge, WPS/AC Back Catalog number: CTS-21406 Availability: In the manufacturer's stock Price on request - + Recommended CTS-A11336-02 Cartridge, Intelligent Valve, 2/pk Price on request CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request CTS-2369 Sapphire Plunger Price on request