The ASTM D6050-21 standard specifies a test method for the determination of insoluble solids by volume in organic liquid hazardous wastes. This method is suitable for the analysis and evaluation of insoluble solids in organic liquid wastes. It helps to identify and manage the composition of hazardous wastes through accurate measurement and separation of solid particles. This standard is of great significance in the field of environmental protection and waste treatment. It can be used to determine the treatment method and storage requirements of wastes, ensure compliance with environmental regulations, and reduce potential hazards to the environment and human health.