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NSF 5-2007

Water Heaters, Hot Water Supply Boilers, and Heat Recovery Equipment
standard by NSF International, 04/03/2007

NSF 46-2010a

Evaluation of components and devices used in wastewater treatment systems
standard by NSF International, 11/23/2010

NSF 50-2008

Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities – Evaluation criteria for materials, components, products, equipment and systems for use at recreational water facilities
standard by NSF International, 02/15/2008

NSF 401-2017a

Drinking Water Treatment Units – Emerging Compounds/Incidental Contaminants
standard by NSF International, 10/27/2017

NSF 37-2009

Air curtains for entranceways in food and food service establishments
standard by NSF International, 04/22/2009