Insinkerator F-601 Filter Cartridge for Hot Water Dispenser ( 2 - Pack ) Reduces chlorine taste and odor for a cleaner, fresher tasting water. Reduces lead, mercury, cysts, asbestos, lindane, benzene, atrazine and other chemicals for healthier, safer water. NSF standard 42 and 53 listed Recommended filter cartridge replacement 6-12 months Includes 2 replacement Insinkerator F-601R Filter Cartridge for Hot Water Dispenser