The ISO 3680-2004 standard specifies a method for the determination of flash points in Paints, varnish, petroleum and related products, using the rapid equilibrate method. This method assesses flammability and safety by rapidly heating a sample and measuring its flash point. The standard applies to all liquid products for which flash point determination is required and aims to ensure that these materials meet safety requirements during use and storage. By providing consistent testing procedures, ISO 3680-2004 helps ensure that results are comparable between different laboratories and production batches, thus improving safety and product quality control.