Needle Seal (For pH 1-14, for operation up to 130 Back Catalog number: CTS-21089 Availability: In the manufacturer's stock Price on request - + Recommended CTS-10597 Wash Tube Seal Kit, 4/pk Price on request CTS-21169 Assy, Capillary, 90mm x 0.17mm ID, w/Fittings Price on request CTS-21147 Inlet Check Valve Price on request