HG/T 4266-2011 "Determination of solids content in Spinning & weaving dyeing and finishing aids" specifies the determination method of solid content in Spinning & weaving dyeing and finishing aids. This standard applies to all types of Spinning & weaving dyeing and finishing aids. The percentage of solid content is calculated by measuring the change of sample mass after drying at a fixed temperature. The standard requires the use of an analytical balance with an accuracy of 0.1 mg and an electrostatic drying oven capable of temperature control at 105 degrees Celsius for testing. During the test, appropriate drying agents such as discoloration silica gel can also be used. Precision and Reliability of Solid Component Content in Spinning & weaving Dyeing & Finishing Aids can be ensured by this method, which is suitable for quality control and product performance evaluation.