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About This Item
Full Description
The manual, auto-initiated, and demand-initiated regeneration (DIR) residential cation exchange water softeners addressed by this standard are designed for the reduction of specific substances that may be present in drinking water (public or private) considered to be microbiologically safe and of known quality. Systems covered under this standard are intended to reduce hardness affecting the aesthetic quality of water.
Document History
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NSF/ANSI 44-2024
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Residential Cation Exchange Water Softeners- Most Recent
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NSF/ANSI 44-2022
Residential Cation Exchange Water Softeners- Historical Version
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NSF/ANSI 44-2021
Residential Cation Exchange Water Softeners- Historical Version
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NSF/ANSI 44-2018
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2017
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2016
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2015
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2014
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2013
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2012
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2009
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2007
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2004
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2002e
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2002
Residential Cation Exchange Water Softeners- Historical Version
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NSF 44-2001
Residential Cation Exchange Water Softeners- Historical Version