LG SW 440 SR

High Rejection Seawater Reverse Osmosis (SWRO) Membranes

LG Chem’s NanoH2OTM high rejection R membranes offer the highest salt rejection of any SWRO membrane on the market – 99.85%. Ideal for warm temperature and high TDS feedwater, these membranes deliver exceptional water quality with industry-standard flux of 25 m3/d (6,600 gpd).

  • Industry-standard flux with highest salt rejection
  • Standard 8-inch spiral wound element design
  • Easy to retrofit existing RO plants
  • NSF Standard 61 Certification 

Product Specifications

LG SW 440 SR
Active Membrane Area 41 m² (440 ft²)
Permeate Flow Rate 25 m³/d (6,600 gpd)
Minimum NaCI Rejection 99.7%
Stabilized NaCI Rejection 99.85%
Feed Spacer 28mil
Stabilized Boron Rejection 93.0
Note: the above values are normalized to the following conditions: 32,000 ppm NaCl, 5 ppm boron, 800 psi (5.5 MPa), 77°F (25°C), pH 8, 8% recovery. Permeate flows for individual elements may vary +/- 15%.

Operating Specifications

LG SW 440 SR
Max. Applied Pressure 8.27 MPa (1,200 psig)
Max. Chlorine Concentration < 0.1 ppm
Max. Operating Temperature 45°C (113°F)
pH Range, Continuous (Cleaning) 2-11 (2-13)
Max. Feedwater Turbidity 1.0 NTU
Max. Feedwater SDI (15 minutes) 5.0
Max. Feed Flow 17.0 m³/h (75 GPM)
Min. Ratio of Concentrate to Permeate Flow for any Element 5:1
Max. Pressure Drop for Each Element 1.0 bar (15 psi)

Product Dimensions

LG SW 440 SR
Length 101.6 cm (40 in.)
Element Outside Diameter (O.D.) 200 mm (7.9 in.)
Permeate Tube Inside Diameter (I.D.) 28.6 mm (1.125 in.)
Weight 16.4 kg (36 lbs.)