Lockout Tagout devices are perhaps the ONLY range of safety products NOT manufactured to any standard per se. OSHA standard 29CFR 1910.147 for Control of Hazardous Energy is limited to implementation only and does not provide stipulations related to the design or materials used in the manufacture of various devices. There are no tests specified for any product, however some manufacturers test their products for chemical degradation and corrosion resistance to ensure products perform in varying conditions. However, a Certificate of Conformity would be available on request.