Compressed carbon filter cartridge is sintered or extruded by high quality activated carbon .Usually it can be made of the various carbon medium such as : coal carbon , nut shell carbon and coconut shell carbon .The CTO filter cartridge is suitable for the water treatment for removing the chlorine, taste and odor.   Carbon medium : coal carbon , nut shell carbon and coconut shell carbon Precision : 5um—10um Length : 5’’ 10’’ 20’’