What Is Third-Party Certification?
This review typically includes comprehensive formulation/material reviews, testing and facility inspections. Most certified products bear the certifier’s mark on their packaging to help consumers and other buyers make educated purchasing decisions. Ours is the NSF mark.
NSF Certification
Recognized by regulatory agencies at the local, state, federal and international levels, NSF certification demonstrates that a product or service complies with all standard requirements. NSF conducts periodic facility audits and product testing to verify that the product continues to comply with the standard.
NSF tests and certifies a wide variety of products including food, drinking water treatment products and water filters, commercial foodservice equipment, bottled water and nutritional supplements.
Why Do Companies Seek NSF Certification?
Our 75 years of experience providing independent, third-party testing and certification helps organizations:
- Demonstrate compliance with national or international standards and regulations
- Demonstrate independent validation and verification of their commitment to safety and quality
- Increase credibility and acceptance with retailers, consumers and regulators
The NSF Mark
NSF Product Listings
How NSF Can Help You
What’s New with NSF
Information Systems Security Association (ISSA) Welcomes NSF’s Brian Schultz into the 2026 Hall of Fame
September 10, 2026Lifetime achievement recognition honors exceptional leadership and lasting contributions to the cybersecurity profession.
NSF Welcomes Nicole Parent Haughey to Board of Directors
September 10, 2026NSF's appointment of Nicole supports the organization's continued focus on long-term growth and transformation.
NSF Launches Independent Certification Standard for Compact Products
August 25, 2026New third-party certification verifies products cutting materials and shipping impacts while maintaining safety and performance.
NSF Achieves European Accreditation for Drinking Water Product Certification Ahead of 2027 EU Deadline
July 22, 2026The ISO/IEC 17065 accreditation from BELAC complements NSF’s testing capacity, enabling end-to-end support for EU Drinking Water Directive (DWD) readiness ahead of the January 2027 deadline.