GB/T 10339-2018 in English

This standard specifies methods for determining the light scattering and light absorption coefficients of paper, paperboard, and pulp using the Kubelka-Munk method. It covers the principles, equipment, reagents, and procedures required for the measurement. The scope includes the preparation of test samples, calibration of instruments, and data processing. The method is applicable to a wide range of paper products and is intended to provide consistent and reproducible results. Detailed instructions are provided for ensuring accuracy and precision in measurements. The standard also outlines the conditions under which tests should be conducted, as well as the reporting of results. It is designed to support quality control, product development, and research activities in the paper industry. The procedures described are suitable for use in laboratories equipped with appropriate instrumentation and trained personnel.