NSF International Launches 455 GMP Certification For Makers Of Dietary Supplements, Cosmetics And OTCs ANAB accreditation makes NSF the first certification body authorized to certify to NSF/ANSI 455 GMP Standards Ann Arbor, MI /PRNewswire/ - Global public health organization NSF International (NSF) was recently accredited by the ANSI National Accreditation Board (ANAB) to certify manufacturers to the NSF/ANSI 455 GMP standards. This accreditation allows NSF to expand its dietary supplement Good Manufacturing Practice (GMP) certification program to include manufacturers of cosmetics/personal care and over-the-counter (OTC) products. NSF is the first independent certifier to begin auditing and certifying products to the new GMP standards.