This is a compatible product. The filter product has been completely upgraded in terms of materials, adopting more advanced high-density activated carbon and a six-layer filtration system with carefully selected domestic filter media and filters, which can remove over 80% of impurities from tap water. While achieving the same lifespan as the original product, it effectively blocks finer impurities and contaminants. [Compatible Models] Water purifier models TK-CJ14, TK-CJ24, TK-CJ23, TK-CJ22, TK-CJ21, TK-CJ12, TK-CJ11, TK-CJ01, and compatible main unit model numbers TK-CJ01C1, TK-CJ21C1, TK-CJ22C1, TK-CJ23C1, TK-CJ23C2. [Domestic 6-Layer Filter Material] One filter can replace 2,000 2-liter plastic bottles. The filter only needs to be replaced once a year. [Removes 19 Substances Including PFOS/PFOA] Removes impurities: The tap water filter system employs advanced carbon block technology to remove the taste and odor of chlorine and reduce multiple harmful substances in drinking water. Substances to be removed: Free residual chlorine (chlorine), CAT (pesticide), PFOS and PFOA, turbidity, 2-MIB (moldy odor), iron (particulate), chloroform, soluble lead, aluminum (neutral), total trihalomethanes, 1,2-DCE, bromodichloromethane, benzene, dibromochloromethane, geosmin (moldy odor), bromoform, phenols, tetrachloroethylene, trichloroethylene. [JIS Standard Domestic Inspection Completed] Compatible replacement for Panasonic TK-CJ24C1 TK-CJ01C1 TK-CJ21C1 TK-CJ22C1 TK-CJ23C1 TK-CJ23C2 faucet-mounted water purifier cartridge, removes 19 substances including PFOS/PFOA, 6-stage filtration, TK-CJ14 TK-CJ12 TK-CJ11 TK-CJ01 TK-AJ11 TK-AJ01 replacement cartridge (1 piece)