Reverse Osmosis membranes allow only water to pass through them. Salts and dissolved organic substances with higher molecular weight than 50 Dalton are retained almost without exception. The operating pressure use for reverse osmosis usually vary between 20 and 60 bar and in some cases can be over 80 bar.

 

Memtech RO System nominal rejection characteristics

Aluminium	96%	Ammonium	96%	Arsenic	94%
Barium	95%	Bicarbonates`	90%	Borate	30%
Bromide	90%	Cadmium	95%	Calcium	93%
Chromate	90%	Chromium	94%	Copper	96%
Ferrocyanide	96%	Fluride	92%	Lead	96%
Mercury	95%	Nickel	96%	Nitrate	90%
Phospate	95%	Polyphosphate	96%	Selenium	92%
Silicate	92%	Silver	93%	Sodium	92%
Sulfate	97%	Sulfite	97%	Thiosulphate	96%
Silica	85%	Cyanide	85%	Bacteria	99%++
Strontium	96%	Magnesium	93%	Boron	60%
Zinc	96%	Orthophosphate	96%	Chloride	92%
				Average	95%

 

Result Comparison of Reverse Osmosis System Vs Other Conventional Purifiers

Contamination	Impurities/Chemicals Removing Capability of Different Processes
(Likely Caused Disease)	Activated Carbon	Pre Filter	Ozonation	Boiling	U.V.Ray	Reverse Osmosis
Sodium (Blood Pressure)	-	-	-	-	-
Calcium (Kidney Stone)	-	-	-	-	-
Magnesium (Kidnet Stone)	-	-	-	-	-
Lead (Mental Sickness)	-	-	-	-	-
Copper (Indigestion)	-	-	-	-	-
Mercury (Pain)	-	-	-	-	-
Nitrate (Dynestery)	-	-	-	-	-
Bacteria (Bacterial Disease)	-	-		-
Pyrogen (Feaver)	-	-	-	-	-
Virus (Viral Disease)	-	-		-
Fluroide (Bone Weakness)	-	-	-	-	-
Arsenic (Poisoning)	-	-	-	-	-

- Not Removed Removed