PM Kit, 1220 Back Catalog number: CTS-21585 Availability: In the manufacturer's stock 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 11-2525 1/4" Short Comp. Screw (Gold-Plated), 10/pk Price on request