Proposed revision to NSF/ANSI 53 – Drinking Water Treatment Units – Health Effects (53i132r1)
The proposed revision clarifies the test requirements for point-of-use (POU) versus point-of-entry (POE) devices in each relevant subsection of Section 7 of NSF/ANSI 53. An informational annex is also being added with examples of how to scale up units with granular media of all kinds and units with carbon blocks. |
