NSF 55:2019
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Ultraviolet Microbiological Water Treatment Systems
Hardcopy , PDF
08-20-2021
English
09-01-2019
The purpose of this Standard is to establish minimum requirements for the reduction of microorganisms using ultraviolet (UV) radiation.
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