BS 3900- A9 discusses test methods for paints. The aim of BS 3900-A is to provide the best industrial practice that helps in assessing the characteristics of paint.
BS 3900- A9 specifies a method for determining the flashpoint of a paint, varnish, paint binder, solvent, petroleum or a related product and makes allowance for deviations from standard atmospheric pressure. The method is suitable for use over the temperature range 5 to 110 °C, although some of the apparatus cannot cover all of this range using the thermometer supplied with the apparatus.
BS 3900- A9 on paints is useful for:
Solvent- and oil-based paints give texture and color, but they are flammable paints. Flammable paints include alkyd, lacquer, and enamel paints that are solvent- or oil-based. The flashpoint is a safety-related characteristic that helps in determining the minimum temperature at ambient pressure at which a vapor-air mixture can ignite in a closed space. BS 3900- A9 provides a test method that describes closed cup equilibrium methods for carrying out a flash/no flash test for paints, varnishes, paint binder, solvent, petroleum and related products. This helps in understanding the behavior of petroleum and its products at the selected equilibrium temperature as may be required to comply with laws or regulations relating to the storage, and transport and to check if the products are adulterated.