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LG RO Membrane 4021


Our LG RO Membranes are suitable for all standard 4021 membrane housings. Incorporating LG’s innovative Thin Film Nanocomposite (TFN) technology our range of brackish water RO membranes offer superior performance with intrinsic anti-fouling properties. They are suitable for applications which require a consistent and reliable membrane performance. These energy saving membranes offer high rejection rates of 99.5% at operating pressures of 10.3 bar.

Why Choose Our LG RO Membrane 4021?

  • Suitable for all standard 4” x 21” membrane housings
  • High nominal rejection rate of up to 99.5%
  • TFN technology with anti-fouling properties
  • Energy saving low pressure membranes

Need help with our LG RO Membrane 4021? Give us a call on 01622 933 853


LG’s range of technologically advanced membranes offer high permeability at low operating pressures. These energy saving membranes are suitable for low to medium salinity brackish feed water. They are suitable for commercial and industrial applications and although LG are ‘the new kid on the block’ when it comes to RO membranes, they already operate in major utilities all over the world.

This LG ES (energy saving) membrane offers an average rejection rate of 99.5% at an operating pressure of 10.3 bar. It is a low energy membrane and is a suitable alternative to Oltremare LOW2-4021, Axeon HF1-4021 and Dow/Filmtec LE-4021

Key Product Information

  • High permeate flow rates of up to 3,800 litres per day
  • Suitable alternatives to other 4021 RO membranes
  • Popular for commercial and industrial applications
  • High operating temperatures of up to 45⁰C
  • Genuine LG RO membranes

Compatible Products

Need help with our LG RO Membranes 4021? Give us a call on 01622 933 853



ATD Diameter 100mm, Connection Diameter 19mm, Length 533mm



Permeate Flow


Average Rejection Rate


Pressure Drop

15 PSI Per Element

Max Operating Temperature


Max Operating Pressure

600 PSI

Membrane Active Area


pH Range



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