Features: Filter precision can reach 0.2-0.5 Micrometre, under 3kg water pressure circumstances, the out-water 180kg/h Light, high air hole ratio and a capacity less than 0.8g/cm, the air hole ratio is 1.3-1.5 times that of a general ceramic filter object. In the same conditions, its transmissibility is 1.5-3 times that of a general piece ceramic filter elements Apertures are evenly laid with a high filter precision that reaches 0.1 Micrometre. Status of self-cleaning is fine without any contamination in itself It is liable to regenerate, which allows rinsing with brushes, polished with sandpaperand flushed with clear water or repeated washing. Removes harmful such as E. coli, Fecal Coli form, Salmonella, Streptococcus, and cysts (Cryptosporidium, Giardia). Reduces and odor, sediment, and asbestos. is washable up to 30 times. The flow rate of the ceramic filter can be easily by simply brushing its outer with a stiff toothbrush, plastic brush or soft scouring pad under running water. As the top layer of ceramic and contaminants are brushed off, a new layer becomes available. Main ingredient: kieselguhr and inorganic agent Note: Do not use soap, detergents or steel wool. Material: Ceramic+Plastic colour: As Shown Package Contents: 4 x Ceramic filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.