We send your Sanwa Reduction Dapper products to our company, interior cleaning, inspection, and we will return it back with a dedicated water cartridge for the Reduction Series. ※ Shipping costs are subject to mutual responsibility. It takes about 3 business days for cleaning and inspection. This is a premium micro carbon high-performance type cartridge for the Sanwa reduction RW-1, RW-2, RW-5, and RW-7. (Removable) *(Total filtration water quantity: 12 tons) JIS standard 13 substances free residual chlorine (karki) / turbidity / total trihalomethane / chloroform / bromodichloromethane / dibromochloromethane / bromoform / tetrachloroleoleoleethylene / 1,1,1-chlorine chloroethylene. Loe tan / CAT (pesticide) / 2-MIB (mold odor) / Soluble lead, Water Purifier Association Voluntary Standard 6 Substances Geosmin (mold odor) / Phenolic / Anion Surfactant / Carbon Tetrollorocloroethylene / Benzene / Sis-1, 2-Dichloroethylene, *With JIS S 3201 Test Method and Purification Test results based on the Association of Veterans Association of Japan (Test Filtration Flow Rate: 1.1 gal (4 L)