Review on 🚰 FS TFC Replacement: Advanced Universal Residential Filtration and Water Purification Solution by Charles You

I bought this to replace the membrane for the iSpring RCC7 reverse osmosis system. https://www.amazon.com/iSpring-5-Stage-Prestige-Drinking-Certified/dp/B003XELTTG/ref=sr_1_7?dchild=1&keywords=rcc7&qid=1631651335&sr=8-7 It's about $5 cheaper than the official replacement diaphragm by iSpring. It works exactly the same. I previously purchased a 3 year filter replacement kit from iSpring. Now I'm up to my ears in 1/2/3 and 5 stage filters but I don't have 4 stage cones (this product). They should be good for a year but I think they will last longer. I'll keep testing the waters as I consider another change. Thank you for selling at a decent price.