Proposed revisions to:
NSF/ANSI 42: Drinking Water Treatment Units – Aesthetic Effects (42i130r1)
NSF/ANSI 53: Drinking Water Treatment Units — Health Effects (53i155r1)
NSF/ANSI 401: Drinking Water Treatment Units — Emerging Compounds / Incidental Contaminants (401i35r1)
The proposed revisions update maximum operating pressure so chemical reduction testing verifies the performance of the filter at a specific flow rate. |