Product review (1 stars): Next time I'll go with generic filter
I received GE MWF water filter and HM TDS EZ TDS Meter today. After replacing the filter and running the water to clear the system I checked my tap water, GE MWF filtered water and my RO water with TDS Meter.

Please note that I'm not trying to compare RO (reverse osmosis) water and GE MWF filtered water, that would naturally be useless comparison. Checking RO water ensured that the TDS Meter was working and that my RO membrane was ok.

I get my water from Gwinnett County Water Resources.

Here are my results:
Tap water  40 ppm
GE MWF filtered water 36 ppm (10% reduction of ppm)
RO water  2 ppm (95% reduction of ppm)

There is only a modest improvement in MWF water quality, and also a marginal improvement in water taste. I use MWF filtered water for ice maker.

Next time I'll save my money and go with generic filter.