The DS/ISO 15184 standard specifies a test method for determining the hardness of paint and varnish coating films using the pencil method. This method evaluates the scratch resistance and hardness of the coating film by applying pressure on the surface of the coating film using pencils of different hardness grades. The standard specifies the test equipment, pencil preparation, angle and method of applying pressure, as well as the standard process for determining the hardness. This method is suitable for quality control and research and development fields and can be used to compare the hardness characteristics of different coatings. Through standardized testing, the accuracy and repeatability of the measurement results can be ensured, providing a reliable basis for the evaluation of coating film performance.