BA 9000 BA 9000 BA 9000 Body Armor Quality Management System Requirements were established by the National Institute of Justice as a quality standard for body armor. It specifies the construction and assembly requirements of personal armor for federal, state, tribal and local law enforcement and corrections agencies; the requirements of BA 9000 are voluntary (but it is recommended by the NIJ). Though BA 9000 was written to be in compliance with ISO 9001, the NIJ notes that a company being certified as ISO 9001 is not necessarily certified as being BA 9000-compliant. BA 9000 incorporates all of the standards of ISO
ISO 31 ISO 31 ISO 31 (Quantities and units, International Organization for Standardization, 1992) is a deprecated international standard for the use of physical quantities and units of measurement, and formulas involving them, in scientific and educational documents. It is superseded by ISO/IEC 80000. The standard comes in 14 parts: A second international standard on quantities and units was IEC 60027 . The ISO 31 and IEC 60027 Standards were revised by the two standardization organizations in collaboration (, ) to integrate both standards into a joint standard "ISO/IEC 80000 - Quantities and Units" in which the quantities and equations used with