The first step is to remove visible and invisible solids from 1 µm (1/1000-part millimeters) filter. This step also eliminates part of the humus, which has a theoretical average of 0.45 µm.
In the next step, from the water it removes most common humic types, some iron, odors, flavors, organic and chemical compounds.
In the final phase, the third step is to remove more humus and most of the possible bacteria that passes through the first stage by 0.1 µm filtration.
*Filter
life is influenced by water quality for example the type and particle size
of humus.