This standard describes a method for the determination of barium content in Paints using flame atomic emission spectroscopy (AES) method (AES). It is suitable for coatings with a "soluble" barium content in the range of 0.05% to 5% (m/m). The standard provides specific test methods and operating procedures and states that the method is used as a referee method in disputed situations. Relevant reagent and equipment standards are found in ISO 385/1, ISO 648, ISO 1042 and ISO 3696, ensuring the accuracy and conformity of the determination results.