Product review (5 stars): A bit more expensive than those older refrigetator cartridges but the new filter brosure says only pure water fills your glass
Replaced the original GE RPWFE filter but then learned that the entire refrigerator needed to be turned off and restarted 1 minute later. (I don't think I waited an entire minute but I did have to go the basement to turn off the breaker and then turn it back on.  When I got back to the refrigerator it seemed  to be running correctly  and cold filtered water filled my glass.