NSF/ANSI Standard 61 is a standard defining the requirements for products that are destined for use in drinking water systems. In summary, the standard requires immersion testing of all products that will come into contact with drinking water for any elements (i.e., lead, mercury, cadmium, etc.) that may leach into the water that passes through the product. Many of Hayward’s standard products underwent testing to this standard in 2007, and are now NSF listed products.
NSF/ANSI Standard 50 provides a comprehensive product evaluation for health effects safety, performance validation and safety for factors such as burst, sustained pressure, cyclic pressure, head loss, UV resistance, tensile strength, impact and load testing, turbidity reduction, filtration efficacy, bacterial disinfection efficacy, cyst inactivation, durability or life testing, chemical resistance, corrosion resistance and electrical safety.
This applies to various filter media diatomite and other pre-coat media filters, granular media filters, cartridge filters, skimmers, pumps, valves, suction fittings or other equipment that may be used in pools, spas and other recreational water facilities. Hayward’s products that are NSF 61 and NSF 50 listed can easily be found on the NSF website at www.NSF.org.
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