Product review (1 stars): Doesn't filter the water as advertised.
Bought this and install it through my fridge water line and expecting my TDS reading be lower.  The reading is the same as water coming from my sink faucet.  I flushed almost 10 gallons of water out before I tested it with a TDS meter and test it 3 more times.  The reading fluctuated about 10 points or lower.  Save your money !!!