SS Primary Inlet Check Valve Filter Kit, 2/pk,Waters,700002912 Back Catalog number: CTS-A11123-02 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11116 Filter, Air, ACQUITY Pump,Waters,700002632 Price on request CTS-11370 Filter, Air, Door,Waters,700005167 Price on request 15-04-05242 EXP2 Pre-Column Filter Holder (Fittings Included, for use w/EXP2 Filter Cartridges) Price on request