RO Membranes

Find reverse osmosis membranes for use with your RO system at Finest Filters. Reverse osmosis (RO) is a process that’s designed to remove contaminants from water by using pressure to push the water through a semi-permeable membrane. The RO membranes you’ll find in our collection are used in window cleaning, as well as in aquatics. Discover the right RO membrane for your needs today. 

Our reverse osmosis membranes come with a gpd (gallon per day) rating, giving you an idea of how much water can be filtered each day with the model you choose. You’ll find RO membranes with a wide range of gpd capabilities in our collection, including models from well-known brands like JCM, Vontron, and Spectrum.

One of the most powerful models we stock is the 4040 RO membrane from Vontron - the brand’s ULP21 4040 Commercial 2400gpd Reverse Osmosis Membrane is capable of producing 2,400 gallons of product water each day. Another fantastic model for window cleaners is the Spectrum 4040 RO Membrane WW-4040, which has a rejection rate of 98.5% and is designed to ensure a spot-free finish.

An RO membrane should be replaced when the level of total dissolved solids (TDS) starts to rise in the ‘filtered’ water. Keep an eye on the levels you’re seeing and make sure you have a stock of spare RO membranes on hand. 

Whether you’re a window cleaner or a fish tank owner, you’ll find an RO membrane that’s right for you in our collection. Shop our full collection of RO units, RO booster pumps, and more.