GB/T 12690.3-2015 《Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides—Part 3: Determination of water content of rare earth oxides—Gravimetric method》 Related products

This standard specifies the method for the determination of moisture content in rare earth oxides by weight method, which is suitable for the determination range of 0.20% to 10.00%. The moisture content is determined by calculating the mass difference before and after drying by heating the sample at 105 ° C to 110 ° C until the moisture is completely evaporated. The standard makes specific requirements for equipment such as weighing bottles, scales and drying ovens, and specifies the preparation and weighing methods of the sample to ensure the Accuracy of measurement.