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NSF 53-2007a Addendum 1.0
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NSF 53-2007a Addendum 1.0 Addendum 1.0 to Drinking Water Treatment Units-Health Effects
Amendment by NSF International, 03/01/2008
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Full Description
Issue 68The revision made in this issue lowers the maximum contaminant concentration (MCC) for lead for material extraction testing from 0.015 mg/L to 0.010 mg/L in Table 1.
Issue 69
The revision made in this issue clarifies the formulation review requirements and provides consistency between the Drinking Water Treatment Unit Standards and NSF/ANSI 60 and NSF/ANSI 61.