Historical
NSF/ANSI 50-2012
Equipment for swimming pools, plas, hot tubs and other recreational water facilities
In this edition of NSF/ANSI 50 the following revisions were incorporated: Issue 67 - Annex H When Annex H of NSF 50 was modified in 2005 the procedure eliminated the specific test method for ion generators. This revision reinstates a specific test method for ion generators as well as requires statements in the listing and use instructions that communicate disinfection capabilities of the certified systems. Issue 71 - Batch chlorination systems: This revision updated the operating condition specifications in 15.2 for batch chlorination system components. Issue 72 - Permeability :This revision added a test method for determination of the permeability and cake density of pre-coat filter media. Issue 79 - Life testing: This revision updated the life testing requirements for process equipment Issue 81 - Fence barriers, chemical feed stock, multi-port valve: This revision included modification or updates to: fences and barriers, valve handle clarification, spa temperature requirements, hardware interlock, and sensor output signal requirements. Issue 82 - Copper tests :This revision deleted the requirements for copper test kits for copper/silver ion generators in 16.1 and 16.16.Issue 83 - Electrical requirements: This revision rewrote and moved the electrical requirements to Annex J. Issue 84 - Vacuum ports, data plates, AISI, SPS 4This revision included modification or updates to: vacuum ports, data plates, and normative references. Issue 85 - Feeder output control, electrolytic ClBr, strainers, Annex G :This revision included modification or updates to: Annex G, electrolytic ClBr, non-integral strainers and feeder output control. Issue 86 - APSP: This revision replaced withdrawn Standard ANSI/ASME A112.19.8a with ANSI/APSP - 16.
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