Brackish Water Reverse Osmosis Membranes

Brackish water reverse osmosis membranes are made for water that is saltier than fresh water but less salty than seawater, such as some coastal and inland wells, estuaries and salty surface water. They reduce the dissolved salts (TDS) that make this water taste salty and cause scale, so it can be used for drinking, irrigation or process water.

When you need a brackish water membrane

Freshwater RO membranes are rated for feed water under about 2,000 ppm TDS. If your water tests above that, a brackish water element is the right class. For ocean water, use a seawater desal membrane. A lab or meter TDS test of your source water settles the choice.

Sizes

• 2.5" x 40" for smaller brackish systems
• 4" x 40" (4040) for light commercial and whole house systems
• 8" x 40" (8040) for larger commercial and industrial systems

The size is set by your pressure vessel, so measure the element you are replacing.

Keeping brackish membranes working

Salty, mineral-heavy water scales and fouls membranes faster. Good pre-treatment, an antiscalant and regular cleaning with membrane cleaners extend element life. Replace the elements when output and rejection no longer recover after cleaning.

See all RO membranes. These elements are industry standard sizes and fit standard pressure vessels of the same size whatever the brand, including Crystal Quest systems.