GB/T 8088-2025 "Determination of Nitrogen Content in Natural Raw Rubber and Natural Latex" stipulates the determination method of nitrogen content in natural raw rubber and natural latex, covering sample treatment, testing steps, result calculation and precision requirements. Nitrogen content is a key indicator for evaluating the purity and mass of natural rubber. The standard provides a unified technical basis for the production control, mass inspection and trade arbitration of related products, and is applicable to rubber processing enterprises, testing institutions, etc.