GB/T 2914-2008 stipulates the determination method of volatiles (including water) in the homopolymer and copolymer of plastic vinyl chloride Resin. The standard clarifies the determination principle, standardizes the requirements for instrumentation and equipment, and the preparation of the sample. It describes the determination steps such as the drying weight loss method in detail, covering the operation of sample weighing, drying conditions and constant weight determination, and gives the result calculation and precision regulations to provide a unified technical standard for the accurate determination of the volatile content of this type of Resin, helping to control the mass and performance of the product.