AQUA CREST NSF/ANSI 42&372 Certified Multiple-Stage Replacement Water Filters, Replacement for Pitcher Filters and Dispenser Filters, Reduce TDS, Chlorine, 2 Pack[Trusted performance] Independently tested and certified by IAPMO lab, our water filter effectively reduces chlorine. It ensures cleaner and safer drinking water. [NSF ANSI Standard Certified] The water replacement filter has been certified by IAPMO R&T against NSF ANSI 42&372 Standards. It has been strictly certified against NSF ANSI 42 for reduction of chlorine, achieving outstanding filtration performance and bringing high quality water