Peristaltic Pump Cartridge, WPS/AC Back Catalog number: CTS-21406 Availability: In the manufacturer's stock Price on request - + Recommended 11-3889 Needle Seat Assembly, 0.12mm ID Price on request CTS-5559 Priming Syringe Needle Price on request CTS-10493 Check Valve Cartridge, 2/pk Price on request