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-3102 Sapphire Plunger Price on request 11-1239 Ferrule, 1/16", SS, 10/pk Price on request CTS-11010 515 Performance Maintenance Kit Price on request