ACQUITY H-Class QSM Performance Maintenance Kit Back Catalog number: CTS-11335 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21526 Jig, Diaphragm Price on request CTS-10493 Check Valve Cartridge, 2/pk Price on request 11-3889 Needle Seat Assembly, 0.12mm ID Price on request