Single chamber type stick sampler
22. In the case of a single chamber type stick sampler—
(a)the sleeve shall move freely;
(b)the instrument shall be inserted vertically downwards till the aperture reaches the appropriate primary sampling position ensuring that the sleeve covers the aperture as in enters the seed;
(c)the instrument shall be withdrawn sufficiently to uncover the aperture;
(d)the instrument shall be left in position until the primary sample has been collected; and
(e)the instrument shall be withdrawn and the contents emptied into a clean container.