LG SW 400 SR

High Rejection Seawater Reverse Osmosis (SWRO) Membranes


LG Chem’s NanoH2O™ high rejection SR membranes offer the highest salt rejection of any SWRO membrane on the market – 99.85%. Ideal for warm temperature and high TDS feedwater, these high rejection membranes deliver exceptional water quality with industry-standard flux of 22.7 m3/d (6,000 gpd). These membranes are well suited for the Middle East and Mediterranean regions.

  • Industry-standard flux with highest salt rejection
  • Standard 8-inch spiral wound element design
  • Easy to retrofit existing RO plants
  • Available with either 28 or 34 mil spacer
  • NSF Standard 61 Certification

Product Specifications

LG SW 400 SR
Active Membrane Area 37 m² (400 ft²)
Permeate Flow Rate 22.7 m³/d (6,000 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 400 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 400 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.)