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Application of nanometer calcium carbonate and its principle of specific surface area analysis
The surface area of ​​nanometer calcium carbonate is very important. The detection data of nanometer calcium carbonate specific surface area is only true and reliable by the BET method. There are many instruments in China that can only be directly compared and detected. Now it is eliminated in China. It is. At present, the specific surface area test at home and abroad adopts the multi-point BET method. The specific surface area measurement standards developed at home and abroad are based on the BET test method. Please refer to the national standard of China (GB/T 19587-2004) - Gas adsorption BET principle A method of determining the specific surface area of ​​a solid material.