Warning: Personnel using this standard should be familiar with the operating procedures of formal laboratories. This standard does not intend to address all safety issues that may arise from the use of this standard. Users formulate corresponding safety and health rules and ensure compliance with relevant national laws and regulations. This standard specifies the method for the determination of trace copper content in natural raw rubber and latex and rubber compounds using them as raw materials - photometric method. This standard applies to the determination of trace copper content in natural raw rubber, latex and these rubber compounds.