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NSF/ANSI 60 Corrosion Protection Standard

August 26, 2025
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In water treatment  , antiscalants play an important role in preventing contamination of reverse osmosis (RO) membranes.   However, chemical safety is of particular importance in drinking water treatment. NSF/ANSI 60 is the most recognized international  standard   in this field and guarantees the safety of antiscalants in drinking water systems.

Part 1: Understanding NSF/ANSI Standard 60

1.1 Definition and history

Developed by the National Sanitation Foundation (NSF) and the American National Standards Institute (ANSI), Standard No. 60 “Chemicals Used in Drinking Water Systems: Health Effects” was first published in 1988 and regularly updated.

1.2 The main objective of the standard

The objectives of NSF/ANSI 60 are:

  • The chemicals used in drinking water treatment are harmless to human health.

  • The concentration of chemicals in the purified water does not exceed the permissible levels.

  • Proven products contain    stable and reliable ingredients.

Part 2: NSF/ANSI 60 Requirements for Contaminant Control

2.1 Restrictions on vehicles

NSF/ANSI Standard 60 sets strict limits for:

  • Heavy metals (lead, arsenic, cadmium, etc.)

  • Volatile Organic Compounds (VOCs)

  • Carcinogens

  • Identify other harmful contaminants.

2.2 Mandatory tests

To obtain certification, the corrosion inhibitor must successfully pass the following tests:

  • Complete, comprehensive analysis

  • Toxicological tests

  • Check the stability of the formula

  • Assess the purity of materials with clean water.

2.3 Acceptable dose

The standard defines a maximum allowable daily allowance (MADL) for each compound based on:

  • Toxicity of substances

  • Residual amount in the water

  • Calculate the Acceptable Daily Allowance (ADI).

Part 3: NSF/ANSI 60 Certification Process

3.1 Main Stages of Certification

  1. Initial assessment    : Review of the design and technical documentation

  2. Product tests    :   physical,    chemical and toxicological tests

  3. Factory inspection    : Assessment of production processes and quality control.

  4. Certificate issuance    : after final approval

  5. Continuous monitoring    : regular  checks  and spot checks

3.2 Specific problems of pollution control

  • Complexity of the chemical formula

  •   Special performance testing required.

  • Strictly limit dietary supplements

  • Detailed document requirements

Antikalkmittel in MembranfilternPart Four: Benefits of Using NSF/ANSI 60 Anti-Contamination Materials

4.1 Health Benefits

  • Provision of clean drinking water

  • Prevent  pollutants  from entering the water

  • Reducing risks to consumer health

4.2 Technical Data

  • Reliable operation of reverse osmosis systems

  • Compatibility with different  membranes

  • Effectively reduces sludge formation

4.3 Legal and commercial interests

  • Compliance with hygiene standards

  • Increase customer trust

  • It can be used for government and public projects.

  • Competitive advantages in the market

Section 5: Differences Between NSF/ANSI 60 and Other Standards

5.1 Comparison with general quality standards (e.g. B. ISO 9001)

  • The National Science Foundation places special emphasis on  (    occupational safety and health, not just work).

  • Stricter requirements for vehicles

  • Toxicological tests are required.

5.2 Comparison with environmental standards (e.g. ECOLOGO)

Section 6: Proper Selection and Use of NSF/ANSI 60 Antifouling Materials

6.1 Product selection tips

  • Verify      the certificate (via the NSF website)

  • Compatible type of reverse osmosis system

  • Please note the pH range and operating temperature.

6.2 Best practices

  • Follow the manufacturer’s dosage recommendation.

  • Suitable injection system

  • Regularly monitor system performance

6.3 Maintenance and storage

  • Suitable temperature conditions

  • Prevent product contamination

  • Commitment at term

At last

The NSF/ANSI Standard 60 for limescale inhibitors is a fundamental requirement for drinking water systems. It sets    strict health and safety standards to prevent    harmful substances from entering drinking water. For consumers, choosing a limescale inhibitor with this certification means:

  • Provision of clean drinking water

  • Effectively prevent rain

  • Compliance with hygiene standards

With this certification, manufacturers can objectively confirm the quality of their products and strengthen their market position. In addition, as a global standard, NSF/ANSI 60 plays a fundamental role in ensuring public health and drinking water quality.