ISO 3963:1977, Fertilizers - Sampling from a conveyor by stopping the belt

The method should be used only where other methods, such as automatic sampling of scoop sampling from a free fall, are impossible, or as a reference method.It consists in inserting of two parallel boards or metal sheets vertically down into and at right angles to the streams of the material and to the axis of the stopped belt, and removing of the material between the boards or sheets. This title may contain less than 24 pages of technical content.