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NSF/ANSI 53-2022 ADD

Drinking Water Treatment Units - Health Effects

The reference document “Informative Annex 7: Examples of Point-of-Entry (POE) Extrapolation” was unintentionally left out of the 2022 edition of this standard. This addendum incorporates the annex and refers to it as “Informative Annex 8,” as there was already an Informative Annex 7 (Issue 132).


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