Solvent Bottle Filter, 5/pk Back Catalog number: CTS-5531-05 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-12013 Tungsten Lamp (1000 hr) Price on request CTS-A138 Ceramic Plunger Assembly Price on request