3M DWS2500T-CN 浄水カートリッジセット（香港正規品）
Micron Rating: 0.2 micronCapacity: 750 Gals (2,839L)* * Change the cartridge when the water flow becomes slow. Suggest to change cartridge every 6 to 9 months. Cartridge life varies by water consumption and water quality but the maximum life is 12 months only.