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Dow RO Reverse Osmosis Membrane

Dow RO membrane elements offer superior quality and performance for the separation of contaminants in concentrated water resulting in purified, clean drinking water.


DOW reverse osmosis (RO) membranes for home drinking water treatment units are among the most reliable and consistent elements in the industry. 

Advanced membrane technology and automated fabrication allow Dow to precisely produce each and every element to tight, pre-defined specifications. 

Dow’s advanced and consistent RO element quality helps customers deliver systems that reliably provide low impurity drinking water. 

Specifications and main performance of membrane elements

TypeModelReject (%)Average Permeate GPD (m3/d)Working Pressure & ApplicationTesting Conditions
Pressure psi (MPa)Solution Concentr. (PPm)Recovery Rate (%)
Household RO MembraneUM1812-5099.050(0.2)Working under extremely low pressure. Applicable to residential   water purifier and water purifying devices in hospital and laboratory water   treatment with TDS lower than 500 ppm.60 (0.41)25015
UM1812-75HR99.075   (0.28)
UM1812-7597.075   (0.28)
UM-2012-100HR99.0100   (0.38)
UM-2012-10097.5100   (0.38)
Special Size
   RO Membrane
UM-2812-20097.0200(0.76)working under extremely low   pressure. Applicable to automatic water dispenser and residential drinking   fountain.100   (0.69)25020
UM-3012-30097.0300(1.14)100   (0.69)25020
UM-3012-40097.0400(1.51)100   (0.69)25020
UM-3013-40097.0400(1.51)100   (0.69)25020
UM-3012-50097.0500(1.89)100   (0.69)25020
UM-3013-50097.0500(1.89)100   (0.69)25020
UM-3013-60097.0600(2.27)100   (0.69)25020
UM-3013-70097.0700(2.65)100   (0.69)25020

Membrane Type: Thin Film Composite

Maximum Operating Temperature: 110°F (43°C)

Maximum Operating Pressure: 125 PSI

Maximum Feed Flow Rate: 1 GPM

Minimum Concentrate Flow Rate: 4 x Permeate

pH Range, Continuous Operation: 3 - 11

Maximum Feed Water Turbidity: 1 NTU

Maximum Feed Silt Density Index (SDI): 5 SDI

Chlorine Tolerance: 0 PPM

Important information

This high quality reverse osmosis membrane is widely used in household water purifiers, aquariums and other small commercial water purification equipment.

Remove heavy metals (mainly calcium and magnesium), bacteria and any other carbonate particles from the water source.

If you would like to know more about our RO membranes, please contact us