For the last 40 years, NSF has been helping people Swim Safer™ by meeting the needs of public health inspectors, product manufacturers, aquatic facility managers, facility users, and homeowners through a vast array of testing and certification services. These service offerings to this industry include the NSF Pool and Spa Equipment Program. This program encompasses voluntary standards, such as NSF/ANSI Standard 50, plus various standards criteria from ASTM, ASME, and others.
NSF/ANSI Standard 50 - Equipment for Pools, Spas, Hot Tubs, and Other Recreational Water Facilities is continually evolving and incorporating requirements from other standards. The standard works to enable a comprehensive product evaluation for health effects safety, performance validation, and safety for factors such as burst, sustained pressure, cyclic pressure, head loss, turbidity reduction, filtration efficacy, disinfection efficacy, durability or life testing, chemical resistance, corrosion resistance, and electrical safety.
NSF Standard 50 applies to diatomite and other pre-coat media filters, sand filters, cartridge filters, recessed automatic surface skimmers, centrifugal pumps, drains, flexible pool and spa hose, adjustable output rate chemical feeding equipment, multiport valves, flow-through chemical feeding equipment, and process equipment, including: in-line and brine type electrolytic chlorinators; copper/silver and copper ion generators; UV systems; and ozone generators. The components and materials are intended to be used specifically for swimming pool, spa, or hot tub water circulation and treatment in both public and residential applications. NSF uses other standards as appropriate to evaluate pool and spa products that don't currently have detailed testing criteria within NSF Standard 50. Some examples of frequently referenced standards and documents include:
For more information on NSF's Pool and Spa Equipment Program, please contact NSF Shanghai Co., Ltd. at firstname.lastname@example.org.