Inlet Check Valve Back Catalog number: CTS-21145 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21015 Ferrule, 1/16", SS, 3/pk Price on request CTS-7550 Performance Autosampler Needle Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request