Sapphire Plunger Back Catalog number: CTS-11425 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-10391 Plunger Wash Seal Price on request CTS-21100 UPLC Check Valve Assy, Spring Loaded Price on request