Filters 50 Plus Impurities Including: Lead, Asbestos, Mercury, Chlorine Taste and Odor, 8 Pharmaceuticals, and Cysts; for complete list, see performance data sheet for full contaminant reduction information. Certified by IAPMO R and T against CSA B483.1, NSF/ANSI 372 for low lead content, NSF P473, NSF/ANSI Standard 42, 53 and 401 for the reduction of claims specified on the performance data sheet. Project Source refrigerator water filters provide a compatible fit with select GE French door refrigerators; Project Source filter PSGRP fits GE filter RPWFE