Cartridge Check Valve Housing, 2/pk Back Catalog number: CTS-21010 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-10985 600/610 Performance Maintenance Kit Price on request CTS-20612 Plunger Seal, Black Price on request CTS-3209 Syringe Seal, 250μL/2500μL Price on request