Product review (3 stars): Really displeased with this Pur "compatible" filter.
*****EDIT*****

I was contacted by this seller and offered a full refund due to my unsatisfactory experience (see below).  I am changing this review from 1 star to 3 stars because, although I was not satisfied with the product, the service was top notch!

I tried to save a few dollars and buy a cheaper refrigerator filter, and I won't make that mistake again.  I understand that you may need to run some water thru new filters before usage, but I definitely did not expect the first few glasses to come out so dark black that you literally can't see through them.  One of the FAQ's mentioned using this "early" water to water plants, but I would not feel comfortable doing even that.  I'm glad I didn't throw out the old filter, as I was able to reinstall that one and toss this one out.  I also felt it necessary to toss out a few trays of ice from the icemaker just to make sure that didn't turn black either.  From now on, I will be spending a few more bucks and going with the real Pur filter (which has never had even one drop come out discolored) instead of a Pur "compatible" filter.