Rated 4 out of 5 by 1
Rated 4 out of 5 by granddan4naomi does as advertised. finishes off the purification process begun by the r.o. membrane
it would have been helpful if it had come with instructions as to which end was up. unfortunately, i had mine installed upside down for months before i realized it wasn't changing color. the tds meter was showing around 11 during its time upside down. when i reinstalled it correctly, the tds meter showed zero dissolved solids, which is where it should be.
January 6, 2016