... .Reverse osmosis membrane aperture very small and can effectively remove dissolved in water salts, colloid, and microbial, organic matter, etc ... , germ, protozoa, pathogens, bacteria, inorganic chemical and so on. 2) No need to add any chemicals, stable pure ... connection. 5) Equipped with auto pressure protection system and on -line monitor. 6) Automatically and manually wash RO membrane. Also ...