minimum mass of the liquid at design temperature divided by its volume, when specifying density, the unit of density used must be explicitly listed along with the temperature, e.g. kg/m³ or g/ml at t°C (see note), the standard reference temperature in international trade in crude oil and its products is 15°C (see ISO 5024), but others may be used for statutory measurement or other special purposes reference temperatures may be required
min. density (at design temperature)