The National Health Foundation (National? Sanitation? Foundation (NSF), founded in 1944, is an independent and non-profit NGO. NSF is committed to standard setting, product testing and certification services in the field of public health, safety and environmental protection, and is an authoritative organization in the field of public health and safety.
NSF has several independent laboratories, which can carry out physical performance and function tests, chemical analysis, toxicological analysis and microbial tests. NSF professionals include engineers, chemists, toxicologists, public health scientists and computer scientists, who have rich experience in public health, food safety, water quality and environment. The certification issued by NSF has been recognized by American National Standards Institute (ANSI) and Canadian Standards Committee (SCC).
As a neutral third party, NSF has been recognized and certified by 13 national or industry authorities, including American National Standards Institute (ANSI), American Occupational Safety and Health Administration and Canadian National Standards Committee. NSF is the designated cooperation center of the World Health Organization (WHO) in food safety and drinking water safety and treatment.
NSF serves 4,000 companies and 8,000 factories in 80 different countries. More than 25,000 HVAC products are certified, registered in more than 3,500 management and environmental systems, and more than 20,000 factory audits are conducted every year.
The significance of NSF logo lies in: NSF has a good reputation in the industry and consumer groups; Highly recognized by the national legislature and government agencies; The NSF mark is universally recognized; It is a WHO cooperation center in the following areas: water safety and water treatment, food safety and indoor environment. Authorizing a product with the NSF mark means that the product is confirmed in the following aspects:
1, which can achieve the ability of removing impurities marked in the product manual; ?
2. The materials that make up the product will not add pollutants to the water during the water treatment process; ?
3, in line with the design and production process requirements; ?
4. The product has no structural and functional defects;
5. The certification standards shown in product advertisements, sample materials and labels are true and accurate.
NSF certification system is of great significance to people in the industry, consumers and manufacturing units. NSF, a credible, objective and independent third-party monitoring organization recognized by the public and the government, has tested and verified that the products meet specific standards, which means that the products with the logo have undergone rigorous testing and made a guarantee to consumers. All units participating in the NSF certification system must be tested, retested and inspected/audited by a third party, and manufacturing units must follow open standards when producing products. Standards include product manufacturing standards, materials, design, process flow, etc. At the same time, NSF requires that if a company wants to print the NSF logo on its products, it must meet the strict requirements of NSF certification and authorization. These requirements include initial and periodic testing and evaluation, and even surprise inspection. If the logo is found to be misused, or the product does not meet the requirements, NSF can seal up, seal up the products and goods in stock, even destroy the unqualified products and blacklist them, and take measures such as recall, legal action, informing the public and canceling the certification qualification. Or other harsh actions. NSF represents the interests of all parties, and will control the behaviors of insiders, consumers and manufacturing units, and supervise the implementation of policies and the authority of certification.
Two? Relevant laws and regulations
1? American safe drinking water act
It is required that the lead content of all products used in the United States should not exceed 8%; It is required that water delivery terminal equipment such as faucets must meet the lead precipitation standard of NSF6 1; Forty-three states in the United States require that products that come into contact with drinking water must pass the test of NSF Standard 6 1.
2? American HVAC Code: There are two main standards IPC (International HVAC Code International? Pipes?
Code) and UPC (unified HVAC piping specification? Pipes? Code). The specification specifies which products can be used and which standards must be met.
3? Examples of HVAC piping codes and standards:
Tap- specification requirements conform to ASME? a 1 12. 18. 1/CSA？ B 125. 1 and NSF-61/9;
Shower valve-specifications meet ASSE? 10 16 or CAS? b 125；
Copper tube -ASTM? B88
Plastic pipes and fittings-according to NSF standard 14.