We would not have drinkable
"We would not have drinkable water w/o this R/O filter! Thanks for being an excellent product!"


Industry Standard Sized Membrane
General RO Filter Installation Video
DOW FILMTEC™ MEM-90 reverse osmosis membranes are the industry’s best and most reliable filters for home drinking water. These premium-grade membranes are selectively produced elements that have been specially tested and packed by the manufacturer to guarantee the highest contaminant rejection rates possible. Additionally, these membranes also offer the fastest response time, high flow rates and excellent removal capacity immediately after install with minimal settling in period. Available only through this website, APEC is proud to be able to offer these special MEM-90 membranes exclusively to our customers.
DOW FILMTEC’s advanced membrane technology and automated fabrication allow their elements to deliver consistent performance that equipment suppliers, water treatment dealers, and residential customers can rely on. These FILMTEC membranes are deliver excellent performance in terms of flux, salt and organics rejection, and microbiological resistance.
Polyamide Thin-Film Composite
113 DegreeF (45 DegreeC)
150 psig (10 bar)
2.0 gpm (7.6 lpm)
2-11
1-13
SDI 5
< 0.1 ppm
MEM-90
90
99
1.75 x 11.75L
0.72 lbs
We are proud to offer 1 day order processing (excluding weekends and holidays). Orders that are placed prior to 12:00 pm PST with express shipping services will be guaranteed to ship out the same day – subject to order verification and credit approval. Our shipping charges are based on the method of service and the location.
Products can be returned within 30 days from the date of invoice. Please carefully review APEC's Return Policy details and conditions.
General RO Filter Installation Video
DOW FILMTEC™ MEM-90 reverse osmosis membranes are the industry’s best and most reliable filters for home drinking water. These premium-grade membranes are selectively produced elements that have been specially tested and packed by the manufacturer to guarantee the highest contaminant rejection rates possible. Additionally, these membranes also offer the fastest response time, high flow rates and excellent removal capacity immediately after install with minimal settling in period. Available only through this website, APEC is proud to be able to offer these special MEM-90 membranes exclusively to our customers.
DOW FILMTEC’s advanced membrane technology and automated fabrication allow their elements to deliver consistent performance that equipment suppliers, water treatment dealers, and residential customers can rely on. These FILMTEC membranes are deliver excellent performance in terms of flux, salt and organics rejection, and microbiological resistance.
Polyamide Thin-Film Composite
113 DegreeF (45 DegreeC)
150 psig (10 bar)
2.0 gpm (7.6 lpm)
2-11
1-13
SDI 5
< 0.1 ppm
MEM-90
90
99
1.75 x 11.75L
0.72 lbs
We are proud to offer 1 day order processing (excluding weekends and holidays). Orders that are placed prior to 12:00 pm PST with express shipping services will be guaranteed to ship out the same day – subject to order verification and credit approval. Our shipping charges are based on the method of service and the location.
Products can be returned within 30 days from the date of invoice. Please carefully review APEC's Return Policy details and conditions.
Overall rating: 4.3055553 / 5 from 36 reviews.
The APEC High-Rejection 90 GPD Reverse Osmosis Membrane is highly recommended for its quality filters, excellent water taste, and health benefits. Customers praise the ease of changing filters and the overall system performance.
Review topics: [installation, support, quality, problems, water, filters, system, apec, difference].
"We would not have drinkable water w/o this R/O filter! Thanks for being an excellent product!"
"This filter along with its companions work very well and are long lasting. The problem is not the filters but the time it takes to get them. I waited more than a week for them to arrive and we are in Los Angeles County, the same as APEC. But the filters were shipped from Texas!"
". I’ve had the portable counter top filter for many years and the replacement filters do exactly what they are supposed to do. Filter! ."
"We still do not have a normal full stream of water coming out."
"Works great, easy install, even easier purchase and fast delivery"
"Enjoy the much cleaner water. However, it is an IMPOSSOBLE ordeal to remove the Stage $ membrane from the housing. There is no easy way to grip/hold the back end of the Stage 4 housing firmly enough, so it just rotates when you try to twist the cap off it. If you manage to not destroy the housing just opening it, then it is then nearly impossible to remove the membrane without ruining and/or dirtying the end & inside where you have to remove it. The membrane comes preloaded with a new system, why can't they have that available on the website to order."
"Works"
"Works as advertised"
"GREAT!"
"I’ve been really happy with this filter. It makes a big difference in water taste — super clean and crisp. The 90 GPD capacity is plenty for daily use, and installation was pretty simple. It seems to hold up well too, lasting a couple of years with good maintenance. Only downside is that if your water pressure is low, it can run a bit slow, but that’s pretty common with RO systems. Overall, it’s reliable, easy to use, and worth the upgrade."