The ASTM D1149-2018 standard test method is used to evaluate the deterioration of rubber in an ozone environment, specifically checking formation. This method determines the ability of rubber materials to resist cracking by testing their ozone resistance performance under controlled ozone concentrations and specific environment conditions. Testing is applied to vulcanized rubber, rubber compounds, and Miscellaneous-like materials. Results are used in production, research and development, and quality control, but do not necessarily accurately reflect performance in actual outdoor use. The standard highlights differences between laboratory conditions and actual service environments and requires compliance with relevant safety and health practices.