The quality of chemical analysis is inextricably linked with such concepts as the methodology of analysis, unification, certification and standardization. In essence, a modern analysis technique is a type of software that allows quality control of the specific types of substances and materials in chemical composition. The methodology is a formalized regulatory document implemented at different levels — in the form of a certified procedure, in the form of an enterprise standard method, in the form of a unified industrial method, in the form of a national (state) and international standard. It is through the use of analysis techniques provides consumers, product manufacturers, and scientists with the most important information about the composition of a huge variety of substances and materials, the reliability of which allows their specific use and determines the cost of production. Therefore, the development and application of the methods need legal regulation both at the national and international levels. Features of standardization of analytical methods are considered in the case study of the quality control of metallurgical products.