Product review (1 stars): A COMPLETE SCAM - DOES NOT WORK AT ALL
Save your money and do not buy this.  IT IS A TOTAL SCAM.  Having a bunch of testing equipment from my aquarium, I decided to conduct a little experiment.  Keep in mind I approached this whole thing completely open-mindedly.  I thoroughly expected the product to work as advertised and was just curious how WELL it worked.  That is why I decided to conduct the experiment in the first place.

I used a freshly calibrated PH meter as well as a TDS meter.  I followed the instructions and flushed the filter after installation.  The instructions said to flush for 2.5 Gallons... I went a little further and flushed for 4 gallons.  I poured a cup of the "filtered" water into one glass, a cup of water from my reverse osmosis system into a second glass, and a cup of regular tap water from the sink into a third glass as the control.  I then took my measurements.

Control - Tap Water from sink - PH 8.2 - PPM 430
"Filtered Water" - PH 8.2 - PPM 427
R/O Water - PH 7.2 - PPM 15

Are you kidding me?  All the filter was able to achieve was remove a measly 3 PARTS PER MILLION???  What a complete waste of money and a scam.  A simple RO System found here on Amazon which I also own reduced the PPM dramatically.  I certainly didn't expect this single cartridge refrigerator filter to work as good as an R/O system, but it should work better than this!  And they suggest we replace the filter every 6 months?  Nice revenue stream there LG.  No thanks.