Coal is a crucial resource in modern society

and improving the accuracy of coal testing is of great practical significance for avoiding trade disputes and optimizing coal usage. This paper provides a comprehensive analysis of the sources of error in coal testing

incorporating practical experience. It explores strategies for enhancing testing accuracy from two perspectives: the operational processes and the factors affecting accuracy. The study delves into aspects such as personnel qualifications

facility conditions

testing methods

equipment

reference materials and reagents

and quality control measures

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. The aim is to offer effective solutions for improving coal testing accuracy

ensuring the reliability and validity of results

and providing valuable references for practices in related fields.