Dissolution characteristics is an important index for soluble powder,however,the experimental results are always irreproducible because of the fine powder's lump-formation or conglutination tendency. 溶解性能是粉粒状物质的一个重要理化指标,但在测量过程中由于细小微粉易结“团块”并黏附在器壁或搅拌桨上,会影响测量结果。