The standard applies to the examination of vegetable and animal oils and fats, and technical fatty acids. The volumetric conventional mass, also referred to in the past as "volumetric weight" or as "liter weight", can be used to calculate the conventional mass (i.e. the mass when determining which has not been corrected for the upward force of the surrounding air) of a batch of oil or melted fat, the volume of which is accurately known, e.g. by measuring the contents of a tank. The volumetric conventional mass is also used as a characteristic value for an oil or fat. The relative density is used as a key number of an oil or fat.
NEN 6311-1993 history
1993NEN 6311-1993 Vegetable and animal oils and fats. Determination of the conventional mass by volume and of the relative density
1983NEN 6311-1983 Vegetable and animal oils and fats Determination of the conventional mass by volume and of the relative density