GB/T 2386-2014 "Determination of Moisture in Dyes and Intermediate Dyes" specifies multiple methods for determining moisture in dyes and dye intermediates, including the Karl Fischer method and direct drying method, which are applicable to moisture testing of various related products. The testing requires instruments such as a Karl Fischer moisture titrator, an analytical balance with a precision of 0.1 mg, an electric thermostatic drying oven with a temperature control accuracy of ±2°C, a vacuum drying oven, and weighing bottles. Different methods are suitable for different product characteristics, and the testing process requires strict control of parameters such as temperature and time, providing accurate data support for production quality control and storage stability evaluation of dyes and intermediates.