Our biochemical ball is made of PP modified material. It has white, grey, black three colors. Its specification and specific surface area are φ50mm and 1400㎡/m³.Many flake structure, internal porous. For adsorption nitrifying bacteria and set the nets pore structure, very beneficial to oxidation of oxygen convection exchange, and for reproductive growth of nitrifying bacteria with a huge biochemical surface area. Our material is different with others,the modified formula added porous particle material, with large specific surface area and shorter membrane-forming time.
