From the sifted sample, a sample of 50 to 100 grammes shall be taken using a separator. This partial sample must be weighed.
Then, this partial sample should be spread out on a table with tweezers or a horn spatula and broken grains, other cereals, sprouted grains, grains damaged by pests, grains damaged by frost, grains in which the germ is discoloured, mottled grains, weed seeds, ergots, damaged grains, decayed grains, husks and live pests and dead insects must be extracted.