Inlet Check Valve Back Catalog number: 11-4060 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-2569 Seal Extension Tube Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-11371 ACQUITY I2V BSM Performance Maintenance Kit Price on request