Backup Seal Back Catalog number: CTS-2963 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-3883 Needle Assembly Price on request PL7075150 MarvelXACT PLS 75µm x 150mm Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request