400 GPD Reverse Osmosis Membrane

Our Reverse Osmosis membranes are Thin film composite membranes, TFC membranes offer the best in terms of production rates, recovery, and rejection ratios. These membranes are high performance and long-lasting with optimum rejection rates to increase pure water production in high TDS water areas. This is particularly relevant in the southern counties of the UK where water quality is often much worse.

Reverse Osmosis membranes are semi-permeable, which means they allow pure water to pass through the membrane whilst rejecting many contaminants such as viruses, bacteria, heavy metals, fluoride, and salts to waste. A full table of all contaminants that Osmotics RO systems filter from your water supply is available in the Technical Data tab.

When replacing a membrane, please ensure you change the flow restrictor at the same time. This ensures your new membrane maintains the correct recovery and rejection ratios which affect performance and produced water quality.

Production Data

• 400 US Gallons per day
• 1520 Litres per day
• 63.33 Litres per hour
• 1.05 Litres per minute
• Average Rejection ratio 98% (200ppm down to 4ppm under ideal conditions)
• Minimum Recommended Recovery ratio 3:1 (3 waste per 1 pure litre of water)
• Manufacturer Recommended Recovery ratio 4:1 (4 waste per 1 pure litre of water)

Features and Benefits

Product features include:

• TFC Thin Film Composite membrane
• 100% dry membrane maximizing shelf life
• High rejection stability at high input TDS
• Standard dimensions to fit in commonly available housings

Test Parameters

• Test pressure 65 psi
• Test solution temperature 25°C
• Test recovery 20%
• Test solution 500 ppm NaCl/R