Product review (1 stars): Very high PPM
Bought this filter to replace my old one.  I also bought a water quality test meter.  I tested the water from the old filter and it tested about 85 ppm.  My tap water tested about 80 ppm.  This is expected out of a dirty filter I guess since it may be packed full of contaminants.  I also tested the water from my 3 gal. carboy which I fill with reverse osmosis treated water and it tested about 3 ppm.  I replaced the filter and let the water run.  I filled about half a gallon then texted the next cup.  It tested at around 140 ppm.  I ran another gallon then tested another cup...125 ppm.  After yet another gallon it seems that the filter is still running at 125 ppm.  I'm not sure why it is not filtering better or at least as good as the old filter.  I'm better off sticking with the tap.