PentekPentair BBF1-20MB Big Blue Deionization Water Filter, 20-Inch, Mixed Bed Deionization Filter Cartridge, 20" x 4.5"

Wanted to upgrade the 10 inch filters to this and I was able to by getting the 20 inch housings and swapping some parts. I go through a lot of DI water at work and needed larger filters.We run our water through a water softener first. Then it goes through a set of GE Merlin RO filters which brings the TDS down to 11 ppm. Then the water goes through 2 of these 20 inch DI filters and then in to a storage tank. Using 3 calibrated TDS meters, we get 0 ppm. The resistivity through some machines is so high, we have to add a hint of tap water back. So it truly is DI water.

Works well, took my RO water from 40ppm to 0 dissolved solids!

Utilisé pour enlever le calcaire de l'eau que je mets dans mon humidificateur. ne filtre pas à 100%

This has worked great as a post free rinse on my cars i purchased solids parts per million counter and my water is around 180 , Once I'm done washing my car i hook up the filter and put the nozzle on a very low flow and rinse the car off "basically spot free rinse"Car comes out spotless This will hold me over until I'm able to purchase the larger spotless system.

I have purchased over 100 of these filters for my employer to filter coolant on a 3000 hp water cooled VFD. They last 2 weeks longer than the previous brand we were using. Typically they last 4 weeks before we need to replace them because the water starts to measure .75 Microsiemens. The water travels through a cooling tower which cuts the life of these filters due to the introduction of copper piping in the flow path. This is a Deionization filter that Deionizes water for mineral free water, if you are using this for a whole house filter it will probably not work well.