FilmTec, BW60-1812-75 75 gpd TFC Membrane for Undersink Reverse Osmosis (RO) System (Replaces Model TW30-1812-75)

I have a 7 stages RO/DI system( 5 micron polypropylene filter, 1 micron polypropylene filter, 1 Carbon block+ 2 RO membrane + 2 stages of deionized filters).I'm using a 100 gpd booster pump right before the fist RO membrane and have a pressure gauge between the pump and the first membrane, so I can verify the working pressure (here it is 80).I manually flush both membranes for a couple of minutes right before start preparing water. Every a couple of months I clean the whole system with a cleaning solution (remember to take the carbon cartridge and the resins cartridges).The street TDS here is 57, and after the two membranes it's 2.I use this filter to prepare RODI water for my reef aquarium, and it's working great.TIP: Remember that RO membranes needs pressure to push molecules through the perforated membrane (too little pressure, excess waste water and low-quality product water will be produced, too much pressure, it could damage the membrane). That's the reason pressure gauge and booter pump may be needed.

I received exactly what I ordered from Water Anywhere , a genuine Dow FilmTec, BW60-1812-75 75 GPD TFC Membrane. Installed to my 5 stage RO system the new membrane plus two carbon block pre-filters and one post carbon filter from Watts Premier WP500024 Standard Annual Water Filter Replacement Kit and a 1 micron, micronfiltercartridges string wound sediment filter instead of the 5 micron sediment filter included in the Watts kit. The 1 micron filter protects the carbon block filters from clogging much better than a 5 micron. After a 2-3 week break-in period could not detect any total dissolved solids using analog meter, Myron L Company RO Meter Model RO-1. Chlorine and chloramines damage membranes. Use a pool chlorine test kit to test the RO system waste water to make sure it is chlorine free. Don't risk ruining a new membrane because of low quality or counterfeit carbon block filters. Finding quality filters is a real challenge and is of utmost importance.

This brand by far is the most reliable RO membrane. It is rated for 75GPD but I’m producing roughly 100GPD even though the pre-filters are old (water pressure comes in RO membrane at 60psi, outside temperature from 63-74). Don’t trust other cheap brands listed here on Amazon, you will regret it. Bought a different brand in the past which produces 24GPD (advertised as 100gpd with 1:1 ratio) with a skyrocket Waste:Clean water ratio of 7:1.

Brings my local 300~ tds water to about 3-4. Works exactly as it should and still flows water well.

I use this in my APEC RO-PH90. This is a fabulous price, and I am grateful because my last membrane went after 2 years instead of the reported 5 year life. The first membrane I received had holes in the plastic packaging (directions say not even to touch it during installation so I figured holes in packaging probably compromised the membrane) so they sent another and I returned the initial membrane. It fit perfectly and the system is back to working properly.

Used with my RODI system to make water for ny aquariums

Dow has been the best in the industry with widely available specifications and certifications to show for it. The 100 gpd one does not have the same specifications. Something has to give to generate a fast rate of water flow.

This RO membrane requires specialized tools to install. If you are planning to replace your membrane yourself, you probably want to spend more money and get the complete assembly (with a sealed housing). Also, the shelf life for these membranes is limited, you want to be sure you buy one as close to the time of manufacture as possible.I ordered this ahead of my annual service date to be sure to have everything ready to go. By the time that I discovered I could not install it myself, it was too late to return it and nowhere to sell it.