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NSF/ANSI 505-2021
Conformity Assessment Requirements for Certification Bodies that Certify Products Pursuant to NSF/ANSI/CAN 50: Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities
This standard establishes requirements for activities to be performed when CBs certify products to NSF/ANSI/CAN 50 including documentation reviews, product testing, and facility audits conducted during surveillance.
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NSF International [nsf]