SunPurity Generic Mineral Sanitizer Purifier Cartridge for Sundance Spas Sun Purity GenericSundance Sunpurity Mineral Sanitizer Cartridge for Sundance Spas Mineral purification is a natural process that carries out 3 functions: disinfection, algae prevention and clarification Mineral Sanitizer Cartridge leaves your water clean and clear Helps reduce the potential for unpleasant odors and residue lines, and can be used with your hot tub ozone system