LG SW 400 R

High Rejection Seawater Reverse Osmosis (SWRO) Membranes


LG Chem’s NanoH2O™ high rejection R membranes offer the highest salt rejection in their class – 99.85%. Ideal for warm temperature and high TDS feedwater, these high rejection membranes deliver exceptional water quality with industry-standard flux of 34 m3/d (9,000 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 R
Active Membrane Area 37 m² (400 ft²)
Permeate Flow Rate 34 m³/d (9,000 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 R
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 R
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.)