Filmtec 75 GPD Residential Membrane Review

This soft textured reverse osmosis membrane comes with a simple diagonal sleeve. With many previous purchases I've usually received them from Revain/Home Depot in a hardboard box with air fillers or sponges. While there's no apparent damage, the experience is still twitchy.

After just a few months, we noticed a strange taste in our water. The TDS was over 280, which is less than 50% of our spring water exudates. I can only marvel at how long my family has been drinking unfiltered well water. Our latest membrane was a cheaper TFC membrane made in China and lasted over 3 years with TDS <30.

Filmtec was bought for the name and the reliability it stands for. Always use this membrane. Typical in my case, TDS 185 ppm, my membranes last 5-7 or 8 years. As long as I keep the charcoal and pre-filter for their yearly replacement I can expect the same for this membrane. Location. Reverse osmosis membrane housing with 1/4 inch quick couplings. I simply put the new diaphragm in the empty case, took out the old case and diaphragm and let the system run for about 1/2 hour. When the system is…

Reverse osmosis membranes are not cheap. Where I live, water is insanely expensive, so a malfunctioning diaphragm can quickly turn the cost of replacing it into flushing water down the drain. This is by far the cheapest membrane I have found for my general water system and has a noticeable improvement in cycle time and water loss after replacing my 3 year old original! I got disgusting tap water from a lake a few miles up the road. Our rural water system filters out fish, most plants and some…

I don't know how old my diaphragm is but we've lived here for three years so I decided to replace it. I got some in HD but it sucked and I took most of it and paid attention to the reviews and YouTube videos. Which prompted me to purchase this and several filters which I also reviewed. One of the HD had 25 gallons per day and this one had 75 gallons per day. We're probably using a gallon or less a day, so this will be fine for a long time. This one arrived quickly and I installed it and the…

Bought to replace my existing diaphragm which is about 2.2 years old. I don't need this as I get TDS readings of 0 through my DI resin and 6 straight out of the RO, but I decided to do it all at once. When I received it I noticed that the membrane looked different than the previous version I ordered (Dow photo - old membrane / Dupont - new). I know they split the company, so that's how it is. However, when I inspected the replacement membrane, the folds had large holes at the end and were not…

So far so good. This is a branded filter at a much lower price than the last time I paid for my own branded filter. I also bought a dissolved solids meter and found that the total dissolved solids level only dropped from 26 to 23 ppm after replacing all five filters. I think a 90% reduction is acceptable, but I see some people giving higher numbers. I think that means I really haven't had to replace my diaphragm now. I did it because the flow was noticeably less. Apparently this was caused by…

Somehow this scammer ended up bundled with APEC products. I only noticed it after looking through my purchase history. APEC buys from Dow. Made in the USA. I *thought* that when I bought a complete filter replacement for my Revain APEC C-Top system, I had all the APEC-approved filters. It wasn't until I was more able to handle the ridiculously low flow rate that I went back and found that it wasn't an OEM for my R/O system. The earlier Dow 90 GPD R/O filter purchased by APEC through Revain as…

*I have been using Dow/Filmtec 0 TDS reverse osmosis membranes after filtering for ten years and I have attached photos with a TDS meter. I see a lot of negative reviews about a good product and will try to clear up some of the misconceptions in my review. First, Dow/Filmtec is known for making some of the best reverse osmosis membranes in the industry. I can only name one more expensive brand that is slightly better but produces water even more slowly, which frustrates many of the reviewers…