Backup Seal Back Catalog number: CTS-2963 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21347 Plunger Seal Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request PL7075350 MarvelXACT PLS 75µm x 350mm Price on request