Product review (2 stars): This means the water coming out of my refrigerator is WORSE than it was before I changed the filter
measured the amount of total dissolved solids TDS before and after replacing my refrigerator's old filter.  The old filter measured 115 and this OnePurify filter measured 156.  This means the water coming out of my refrigerator is WORSE than it was before I changed the filter.  I have ran close to 5 gallons of water through the filter and the number does not go down.  Very disappointing.