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NSF/ANSI 53-2013 Addendum

Drinking water treatment units - Health effects - Addendum

The revision corrects an error recently found in NSF/ANSI 53. When the standard was reformatted several years ago, section 1.3 û Alternate materials, designs, and construction was mistakenly omitted (it is currently still listed in NSF/ANSI 42). This language has been reinserted to its previous location under section 1.

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