Bests & Worsts Reviews from Amazon

I testes this water filter to see if it was working. I used the test stick that came with my ZERO water pitcher. So, I tested the water from the TAP. 269 PPM than I tested the water through the refrigerator water filter PPM was only 243 only a change of 10 PPM (PARTICLES PER MILLION). So, I ran 2 gallons of water through the water system in the refrigerator thinking maybe it needs a break in period. Mind you the family has been using the new filter through the refrigerator for about a week now. Still only 243 PPM. Thank I took the same water from the refrigerator and ran it through the ZERO water filter, and you know what the test stick came back with 000 PPM. So, this filter is a total scam. I don’t think most will go fare to test to see if the filter is working like I did. But for $45 I needed to make sure it works. But it failed miserably. I would have been happy if it came back with 150 PPM, but only a 23-point change heck no. I sent it back. TO bad Zero water doesn't make a refrigerator water filter..