Review on Filmtec 75 GPD Residential Membrane by Jackie Harbour

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 ready I check the TDS end for confirmation. Then I take my time and remove the old membrane, clean and dry the old housing and save for the next replacement.