The Safety Equipment Institute (SEI) is a private, non-profit organization established to administer non-governmental, third-party certification programs to test and certify a broad range of safety and protective products.

[1] As of April 2016, it became an affiliate of ASTM International, a global standards development organization.

[2] It is accredited to ISO/IEC 17065, Conformity Assessment - Requirements for bodies certifying products, processes and services, by the ANSI National Accreditation Board (ANAB).

[3] It works with assorted standards organizations to verify that various products meet the safety standards set for them.

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