National Sanitation Foundation

The National Sanitation Foundation pubHshes a Hst of acetal resins which they find acceptable for use in potable water appHcations. 

In the final product, the formaldehyde has completely reacted to form a very inert thermoset resin. Spontaneous emission of formaldehyde from high pressure laminates is measured at approximately the accepted background level of 0.035 ppm (15). Melamine surfaced laminates are tested and approved for food service equipment by the National Sanitation Foundation (16). 

Standard 35for Eaminated Plastics for SufacingFood Service Equipment, National Sanitation Foundation, Ann Arbor, Mich., Nov. 1979. 

Technical-grade soHd and solution sodium chlorite for use in potable water treatment has specifications Hsted by the American Water Works Association (AWWA) (147), the National Sanitization Foundation (NSF), and the American National Standard/NSF International (148). 

Plastic pipe or tubing may be used for a wide variety of services. As with all nonmetallic materials, code restrictions limit the applications in which their use is permitted. In general, their use in flammable or toxic service is limited. Plastic tubing of various types may be used for instrument air-signal connections however, as is the case with all nonmetallic applications, the need for fire resistance must be considered. When used)in specialized applications such as potable water or underground fire water, care should be taken to ensure that the specified products are certified by appropriate agencies such as the National Sanitation Foundation and Factory Mutual. 

Supply of greases with biodegradability certificates and nontoxic degree by NSF H1 (National Sanitation Foundation) and FDA 21 CFR (Food and Drug Administration). 

Until 1990 the EPA maintained a list of chemicals suitable for potable water treatment in the United States. Since then the entire question of certification and standards has been turned over to a group of organizations headed by the National Sanilalion Foundation, which has issued voluntary standards. As of January 1992. standards had been issued for most of the principal inorganic products, hut only for three polymers, polytDADMAC). Epi-DMA (epichlorohydrindimethylamine) polymers and polyacrylamide. Certifications for commercial products meeting specified standards are issued by Ihe National Sanitation Foundation. Underwriter Laboratories, and Sab Water Addilives Institute (SWAI),... 

The National Sanitation Foundation, is an independent, nonprofit environmental organization of scientists, engineers, technicians, educators, and analysts. NSF frequently serves as a trusted neutral agency for government, industry, and consumers, helping them to resolve differences and unite in achieving solutions to problems of the environment. 

National Sanitation Foundation. Class II (laminar flow) biohazard cabinetry. Standard No. 49. Ann Arbor, MI 48105. 1976. 

Standard50 National Sanitation Foundation, Ann Arbor, Mich., 1996. 

National Sanitation Foundation. NSF Standard 49 Advisory Committee for Biohazard Cabinetry Ann Arbor, MI, 1995. 

In addition to laws, criteria and systems discussed above, compliance with several standards play an important role in maintaining drinking water quality. These standards provide for development of criteria when none are available from the regulating body. For example, compliance with National Sanitation Foundation International/American National Standards Institute (NSF/ANSI) Standard 61, which addresses the potential for constituents to leach from components of drinking water systems into water moving toward the tap, is required under many state laws and regulations. 

NSF/ANSl (National Sanitation Foundation/ American National Standards Institute) Standard 60-2003 e (Ol-Oct-2003). Drinking Water Treatment Chemicals - Health Effects. NSE International, Ann Arbor, Ml, USA. 

Polyaluminum chloride products used in the treatment of potable (drinking) water must be approved by the National Sanitation Foundation (NSF). NSF certification has superseded EPA approval. Aluminum chlorohydrate for topical use as an antiperspkant is regulated by FDA. 

Traditional applications of CPVC compounds are hot and cold water distribution piping, fittings, and valves that can handle industrial liquids and chemicals. The increasing popularity of CPVC in its application in hot and cold water pipes in residential units stems from its continuous-use rating of 80°C (176°F) and 100 psi, its approval for potable water by the National Sanitation Foundation (U.S.A.), and its low heat loss along with lack of sweating and scale buildup. 

NSF National Sanitation Foundation OEM original equipment manufacturer... 

NSF (National Sanitation Foundation)/PPI pipe. [Data from Mark 2910. 

LOEL lowest observed effect level NSF National Sanitation Foundation, National Standards... 

National Sanitation Foundation (NSF), coatings for use with potable water NC-513 is being used in coatings that have NSF approval. 

Antimony. Antimony compounds are effective at low concentrations as primary heat stabilizers in rigid PVC applications. They have National Sanitation Foundation (NSF) acceptance for use in potable PVC water pipe. A disadvantage of antimony compounds is their poor light stabihty. 

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