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Updated 03. Nov. 2018

Filtration methods or -levels

Micron or µm or µ

Micron or µm. 1µ is one millionth of a meter or one thousandth of a millimeter (0.001 millimeter).

A reverse osmosis membrane has pores or holes on 0.0001μ.

The list is numbered and sorted with the best at the top. Some molecules are also listed.

Reverse osmosis removes:

sodium:
sulfate:
calcium:
potassium:
Nitrates:
85-94%
96-98%
94-98%
85-95%
60-75%
     iron:
Zinc:
Mercury:
Selenium:
phosphate
94-98%
95-98%
95-98%
94-96%
96-98%
     lead:
Arsenic:
Magnesium:
Nickel:
fluor
95-98%
92-96%
94-98%
96-98%
85-92%
     manganese:
Cadmium:
Barium:
Cyanide:
Chloride
94-98%
95-98%
95-98%
84-92%
88-92%

.
Element from µ to µ
1. Reverse osmosis removes, see above.
RO units in the shop
0,0001 0,0001
Water 0,0001
Sea salt molecule 0,0007
Calcium carbonate 0,0009
2. Nanofiltration removes pesticides, heavy metals, nitrate, used for softening. Nanofiltration in the shop. 0,0020 0,0050
3. Ultra filtration is required to remove all viruses. See temp. description of this filter. 0,0010 0,1000
Hollow Fiber membrane 0,0200 0,0200
Virus 0,0100 0,1000
4. Micro filtration removes all bacteria, but not all viruses. 0,1000 10,0000
Mindste bakterie 0,2000
5. Active carbon filter removes organic compounds, heavy metals, chlorine, etc. - not bacteria and vira. All water filters in the shop contain a carbon filter. Read more here5,0000
Smallest particle, that human eye can see 50,0000
Human hair 100,0000

Filtration methods in diagrams

purified-healthy-water.comContact • last update: 31 Oct 2018