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Paragraph 21 Dynamic seed sampler

Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below:

(1)

In the case of a dynamic spear sampler in which the aperture reaches only to the centre of the sack or small container—

(a)

the instrument shall be inserted into the sack in an upward direction at an angle of approximately 30° to the horizontal with its aperture downwards until the aperture reaches the centre of the sack or container;

(b)

it shall be lightly tapped to remove any seed taken in and then rotated to bring the aperture uppermost;

(c)

it shall be withdrawn immediately with a vibratory or oscillatory motion and at a decreasing speed so that the quantity of seed obtained from successive locations increases progressively from the centre to the side of the sack; and

(d)

seed passing through the instrument shall be collected in a clean container.

(2)

In the case of a dynamic spear sampler in which the aperture reaches to the far side of the sack or small container—

(a)

the spear shall be inserted in the manner described in sub-paragraph (1) until its aperture reaches almost to the far side of the sack or container;

(b)

it shall be tapped and rotated in the manner described in sub-paragraph (1) and then withdrawn at a uniform speed; and

(c)

the seed passing through the instrument shall be collected in a clean container.