“Are these NSF 42, 53, and 401 certified? Will these filters reduce PFOS?”
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The enclosed booklet claims they are tested and certified for NSF/ANSI Standards 42, 53, and 401. It includes a table of about 30 particulate classes (Asbestos, Mercury, Lead and many more.) I don't know what PFOS is, but I don't see a specific reference to it. I would be leery of buying any non-Samsung Genuine filters a.k.a. OEM filters. While they carry lower prices, they often leak and otherwise don't perform as well. BTW, I'm just a Samsung refrigerator owner and subscription purchaser of this item.
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