Product review (3 stars): " I've read reviews for both the "Maytag UKF8001 Pur Compatible Water Filter" and the Maytag UKF8001 and seen poor reviews due t
This product is packaged as "OnePurify Model RFC0900A Refrigerator Water Filter" and has sticker "MADE IN CHINA" and marketed on Amazon as "Maytag UKF8001 Pur Compatible Water Filter"  Giving this product a 3-star OK review because upon unsealing the foil seal something resembling black powder was present. I wiped it off and installed it to replace the Maytag UKF8001 and it fit.  We then ran the water dispenser and it spit out black goo, and the first glasses of water were black, then subsequently gray in color.  Eventually the water ran clear and it seems to taste OK.  The instructions included do say "Run water continuously through dispenser for 4 gallons (approximately 5 minutes) until water runs steady and sputtering stops.  NOTE: during initial use allow about  a 1-2 minute delay in water dispersal to allow internal water tank to fill."  I've read reviews for both the "Maytag UKF8001 Pur Compatible Water Filter" and the Maytag UKF8001 and seen poor reviews due to the black powder and goo issue which some have attributed to carbon filtration.  If this black residue is expected then I think it should be disclosed to consumers so we know it is a safe usable filter after the initial 4gal/5min of flow.  Multiple reviewers have observed black water and black ice and said they returned the filter as defective when they saw the black stuff.
The Amazon site indicates the seller is "Waterfall Filter Company" and the box I received didn't have any evidence of Waterfall being the vendor.