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ISO 520:1977 Cereals and pulses -- Determination of the mass of 1000 grains
standard by International Organization for Standardization, 11/01/1977
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The method is applicable to seed lots for sowing purposes. It consists in weighing a quantity of the sample, separation of the whole grains and weighing the residue, followed by counting of the whole grains. Then dividing of the mass of the whole grains by their number, and expression of the result in relation to 1000 grains.