What Is Certification?

NSF uses the terms "certified" or "listed" in connection with a product, good, component, system, material, compound or ingredient ("Product"). A Product that is certified or listed means that NSF: (1) reviewed the Product, most often through a sampling of the Product; (2) determined at the time of the review that the Product complies with the relevant NSF consensus standard and/or protocol ("Standard"); and (3) conducted or will conduct (as more specifically set forth in the Standard) periodic audits to review whether the Product continues to comply with the Standard. After NSF certifies or lists the Product, NSF authorizes the manufacturer of the Product to use the NSF Mark on or in connection with the sale, use or distribution of that Product. The NSF Mark conveys that an independent, third-party organization (NSF) has determined that the Product complies with the relevant Standard.