EarthSmart S-4 refrigerator replacement water filter is certified against NSF/ANSI 42, 53, 372, 401, P473 & CSA B483.1 to reduce Lead, Cyst, 70+ VOC's (Volatile Organic Chemicals), Mercury, Asbestos, Pharmaceuticals, BPA, PFOA & PFOS as well as Chlorine taste and odor to ensure high quality and performance. Fits in place of the following Samsung Filters: HAF-QIN/EXP, HAF-QIN, HAF-QINS, DA97-17376B, DA97-08006C.