The KM-5A particle attrition tester is specially designed according to the test method for the determination of catalyst attrition rate in my country, and applies to the "China Chemical Industry Standard Fertilizer Catalyst Attrition Rate Determination HG/T2976-2011". It is a new generation product launched after the KM-Ⅲ particle attrition tester, with further improved performance and a more reasonable structure.