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NSF 44

Residential Cation Exchange Water Softeners

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Organization: NSF
Publication Date: 13 June 2017
Status: inactive
Page Count: 64
scope:

The manual, autoinitiated, and demand-initiated regeneration residential cation exchange water softeners addressed by this Standard are designed to be used for the removal of hardness and the reduction of specific contaminants from drinking water supplies (public or private) considered to be microbiologically safe and of known quality. Systems with components or functions covered under other NSF or NSF/ANSI Standards or Criteria shall conform to the applicable requirements therein.

Document History

44
November 7, 2022
Residential Cation Exchange Water Softeners
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...
44
August 16, 2021
Residential Cation Exchange Water Softeners
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...
NSF 44
July 31, 2018
Residential Cation Exchange Water Softeners
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...
NSF 44
June 13, 2017
Residential Cation Exchange Water Softeners
The manual, autoinitiated, and demand-initiated regeneration residential cation exchange water softeners addressed by this Standard are designed to be used for the removal of hardness and the...
NSF 44
September 19, 2016
Residential Cation Exchange Water Softeners
The manual, autoinitiated, and demand-initiated regeneration residential cation exchange water softeners addressed by this Standard are designed to be used for the removal of hardness and the...
NSF 44
April 26, 2015
Residential Cation Exchange Water Softeners
The manual, autoinitiated, and demand-initiated regeneration residential cation exchange water softeners addressed by this Standard are designed to be used for the removal of hardness and the...
NSF 44
October 16, 2014
Residential Cation Exchange Water Softeners
The manual, autoinitiated, and demand-initiated regeneration residential cation exchange water softeners addressed by this Standard are designed to be used for the removal of hardness and the...
NSF 44
June 11, 2013
Residential Cation Exchange Water Softeners
The manual, autoinitiated, and demand-initiated regeneration residential cation exchange water softeners addressed by this Standard are designed to be used for the removal of hardness and the...
NSF 44
February 29, 2012
Residential Cation Exchange Water Softeners
The manual, autoinitiated, and demand-initiated regeneration residential cation exchange water softeners addressed by this Standard are designed to be used for the removal of hardness and the...
NSF 44
August 27, 2009
Residential cation exchange water softeners
A description is not available for this item.
NSF 44
October 15, 2007
Residential cation exchange water softeners
A description is not available for this item.
NSF 44
June 15, 2004
Residential cation exchange water softeners
A description is not available for this item.
NSF 44
February 8, 2002
Residential Cation Exchange Water Softeners
A description is not available for this item.
44
February 8, 2002
Residential Cation Exchange Water Softeners
A description is not available for this item.
NSF 44
February 8, 2002
Residential Cation Exchange Water Softeners
A description is not available for this item.
44
January 13, 2001
Residential Cation Exchange Water Softeners
A description is not available for this item.
NSF 44
January 13, 2001
Residential Cation Exchange Water Softeners
A description is not available for this item.
44A
November 29, 2000
Residential Cation Exchange Water Softeners
A description is not available for this item.
NSF 44
May 13, 2000
Residential Cation Exchange Water Softeners
A description is not available for this item.
44
September 1, 1999
Residential Cation Exchange Water Softeners
A description is not available for this item.
NSF 44
November 1, 1998
Residential Cation Exchange Water Softeners
A description is not available for this item.
44
January 1, 1996
Cation Exchange Water Softeners
A description is not available for this item.
44
January 1, 1996
Cation Exchange Water Softeners
A description is not available for this item.
44
January 1, 1987
Cation Exchange Water Softeners
A description is not available for this item.
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References

This document references:
21 CFR PART 170 - FOOD ADDITIVES
Published by HHS on April 1, 2015
A description is not available for this item.
This document references:
21 CFR PART 171 - FOOD ADDITIVE PETITIONS
Published by HHS on April 1, 2021
A description is not available for this item.
This document references:
21 CFR PART 172 - FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN CONSUMPTION
Published by HHS on April 1, 2018
General provisions for direct food additives. Regulations prescribing conditions under which food additive substances may be safely used predicate usage under conditions of good manufacturing...
This document references:
21 CFR PART 173 - SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN CONSUMPTION
Published by HHS on April 1, 2015
A description is not available for this item.
This document references:
21 CFR PART 174 - INDIRECT FOOD ADDITIVES: GENERAL
Published by HHS on April 1, 2017
General provisions applicable to indirect food additives. (a) Regulations prescribing conditions under which food additive substances may be safely used predicate usage under conditions of good...
This document is referenced by:
CSA B483.1 - Drinking water treatment systems
Published by CSA on January 1, 2007
This Standard covers drinking water treatment systems that are (a) point-of-use or point-of-entry plumbed systems; and (b) point-of-use non-plumbed systems. Note: Drinking water treatment systems...
This document is referenced by:
NSF 244 - Drinking Water Treatment Units - Supplemental Microbiological Water Treatment Systems - Filtration
Published by NSF on August 16, 2020
The point-of-use (POU) and point-of-entry (POE) systems addressed by this Standard are designed to be used for the supplemental microbial control of specific organisms that may occasionally be...
This document is referenced by:
IAPMO CPC - CALIFORNIA PLUMBING CODE
Published by IAPMO on January 1, 2019
The provisions of this code shall apply to the construction, alteration, movement, enlargement, replacement, repair, equipment, use and occupancy, location, maintenance, removal, and demolition of...
This document is referenced by:
12 - Automatic Ice Making Equipment
Published by NSF on March 8, 2023
This standard contains requirements for automatic ice making equipment and devices used in the manufacturing, processing, storing, dispensing, packaging, and transportation of ice intended for human...
This document is referenced by:
NSF 35 - High Pressure Decorative Laminates for Surfacing Food Service Equipment
Published by NSF on February 21, 2020
This Standard applies to HPDL for use as work and nonwork surfaces of food service equipment on which direct food contact during normal preparation or holding operations is not intended, expected, or...
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