Great product.
I am very happy with it. I bought an extra Cafe. 1 to replace the minerals and put in fridge and the other for Humidifiers (no minerals) the water reservoir holds 1.5 café (wish it was a little bigger) I am happy to know i am drinking clean water.

Easy to install and gives the water a nice taste.just remember you to use them every two or less else bacteria may grow

Excellent performance from these remineralization filters. They consistently add approximately 30–35 TDS/ppm back into the water, which significantly improves taste and mouthfeel. Without remineralization, RO water can taste flat or “empty,” but these filters restore a balanced, clean flavor.
A great solution for anyone looking to maintain purity while enhancing overall water quality

How log do they last? They are black so I can't write on them. I can't remember when I changed them. They should be white so I can marksalot them.

Great product