1100 Series Essential Pack, G1310A/G1311A Pump Back Catalog number: CTS-21586 Availability: In the manufacturer's stock Price on request - + Recommended CTS-A096 Syringe Assembly, 250μL Price on request CTS-0621 Inlet Check Valve Cartridge Price on request 11-2401 Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Price on request