RAINSOFT Reverse Osmosis Membrane - Enhanced Compatibility for Efficient Performance Review

filters do not have a 20mm double o-ring on top as required for ultrefinerII FMV-BNFV, part number 21453, serial number 1472663, date code 5-21-15. The photo above shows a real ultrefinerII filter cartridge.

Waste my money. These filters fit my Rainsoft R/O system but do not work as advertised. Water tested after installing these filters and the TDS reading is 185ppm. With Rainsoft filters, TDS levels stayed at 10 ppm.

This does not work with the Rainsoft Ultrafiner (UF50) reverse osmosis system. The reverse osmosis filter lacks the plastic nipple at the bottom that holds the filter properly. Without them, the reverse osmosis filter will pop out of the pressure port and you won't get reverse osmosis filtration and higher pressure than usual. They clearly don't work with the system and the seller is dishonest.

Don't waste your time and money! This item is not compatible with RainSoft and the seller is misleading us. He claims they will work, but after trying, they don't work and aren't the right nipple size to activate the system. The water doesn't flow properly. As soon as I discovered this I requested a return or repair of the product and he only accepts returns if the product has not been opened in the original packaging. He is one and should be removed from Revain if Revain truly cares about…