Product review (1 stars): First 2 orders in past were Good. Latest 3rd order is likely Counterfeit! 1 star because fakes, if had been genuine 5 stars
Great filters certified to NFS/ANSI 53... to remove lead, mercury and more. IF the ones you receive are Not counterfeits! Unfortunately with filters, all you have to rely on that they will really work, is getting real product and trust. I've ordered these 3 times from Amazon over the last 3+ years. The first 2 times I'm pretty sure I got genuine Samsung tested and certified filters. But on my last order, in May of 2018, I received likely counterfeits, which I just returned (thank you Amazon): These latest filters were missing lot numbers, had disclaimers on the labels about not being tested by NFS or ANSI, and the product pamphlet was missing certifications among others. I contacted Samsung and looked at the same product they listed on their site which confirmed these were likely counterfeits.  Then, today, I just received product directly from OEM mfg at slightly less cost (with subscription service where you can set frequency and it had no charge shipping). The product I just received from OEM had lot numbers, certification that it was tested by NFS/ANSI to 42, 53, and 401 standards, had copies of certificated from state of CA on its pamphlet and all the hall marks of being genuine. Amazon is so convenient that it was a big disappointment to find as others have found on this item that they are likely not genuine filters.