This property depends not only on the intrinsic quality of the grain in question, but also on its moisture content, the capacity, shape and dimensions of the receptacle used to measure its volume, and the way in which the receptacle is filled. It is therefore determined: from the mass of grain in a specified condition which is required to MI a receptacle of 20 litres and of specified shape and dimensions, the receptacle being filled with the grain under specified conditions. The hectolitre mass is then obtained by dividing the mass of the grain in kilograms by the volume of the receptacle in hectolitres ; it is thus expressed in kilograms per hectolitre.