GB/T 462-2023 "Paper, Cardboard and Pulp, Determination of Moisture of Analytical Samples" specifies the method for determining the Moisture content of paper, Cardboard and pulp samples under laboratory conditions. This standard applies to the requirements for accurate determination of moisture in pulp production and paper processing. The standard describes in detail the preparation method, determination process and calculation formula of the sample, ensuring the accuracy and repeatability of the measurement results. Through the application of this standard, it is possible to effectively evaluate the Moisture content of raw materials and finished products, guide the control and mass management of the production process, thereby improving the conformity and Stability of paper products.