SN/T 3116-2012 "Determination of non-volatile matter in pesticide adjuvant solutions, thermogravimetric analysis" stipulates the determination of non-volatile-matter content in pesticide adjuvant solutions by thermogravimetric analysis method. In this standard, non-volatile matter refers to the material remaining after 16 hours of heating at 50 degrees Celsius. The testing process involves heating the specimen under thermostatic conditions and recording its mass change, and finally calculating the non-volatile-matter content. Measurement accuracy is ensured by testing with a flat-bottomed aluminum disc and an Analytical Balance with an Accuracy of 0.01 grams. The standard applies to various types of pesticide adjuvant solutions and is designed to evaluate their non-volatile-matter content to ensure that the product mass meets relevant standards and regulatory requirements.