GJB 150.11a-2009 "Methods for laboratory environmental testing of military equipment" specifies specific methods and requirements for military equipment in laboratory salt spray testing. The standard was implemented on August 1, 2009 and replaces the GJB 150.11-1986. The standard includes the purpose of salt spray testing (such as evaluating the effectiveness of material protection layers and the impact of salt deposition on equipment performance), the scope of application (such as evaluating equipment primarily exposed to high salt environments), and test limitations (such as not being able to simulate the marine atmospheric environment or replacing Miscellaneous corrosion assessment). It provides detailed guidance for salt fog corrosion testing of military equipment.