PM Kit, 1290 Binary Pump Back Catalog number: CTS-21421 Availability: In the manufacturer's stock Price on request - + Recommended CTS-10548 Gold Plunger Seal, Analytical Heads Price on request CTS-21526 Jig, Diaphragm Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request