The ISO 2811-1-2016 standard describes the method for determining the density of Paints and varnishes using metal or Gay-Lussac Specific Gravity bottles. This method is suitable for low and medium viscosity Coating products and is able to provide accurate density values. The standard details the equipment and operating steps required to ensure the accuracy and conformity of the measurement. The revised version updates the Instrument Precision requirements compared to the previous version, adding Sample Handling requirements to ensure Reliability and repeatability of test results.