The Chanson Citric Acid C-Clean Kit is designed for cleaning and removal limescale from Chanson Ionizer with filters PJ7000 and onwards. The Chanson Citric Acid C-Clean Kit is made up of three components: One Cartridge Five Filter Pads Three 150 gram bags of Citric Acid Please follow Chanson device manual to ensure cleaning process is correct way. Citric Acid C-Clean Instructions for use below. Description The Chanson Citric Acid C-Clean Kit Instructions are as follows: a) Place a C-Clean Kit Filter Pad on the C-Clean Cartridge Bottom Section; b) Fill the C-Clean Cartridge Bottom Section with supplied Chanson Citric Acid Powder to the ‘Fill to Here‘ line; c) Screw the C-Clean Cartridge Cap to the C-Clean Cartridge Bottom Section; d) Screw the C-Clean Cartridge to the Ionizer Filter Assembly where the Chanson PJ7000 Replacement Filter was removed from. Follow Service Clean guide in the Chanson Water Ionizers Manual.