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11. The instrument used for drawing primary samples shall be one of those described below as appropriate to the location of the seeds, or any other suitable instrument for the time being approved by the Minister.
This instrument may be used, in accordance with the methods described in paragraph 12(i) below, for sampling seeds in sacks or small containers. It shall be a hollow, cylindrical, solid-pointed metal spear or trier which shall be long enough to reach beyond the middle of the sack from the side and shall have an aperture so positioned that portions of seed of equal volume are removed from each part of the sack through which it travels.
Dimensions (mm)
Point | Shoulder | Boss | Aperture Length | Aperture Width | Bore | Outside Diameter | |
---|---|---|---|---|---|---|---|
(a) | (b) | (c) | (d) | (e) | (f) | (g) | |
For sampling: | |||||||
All kinds other than field pea, field bean, lupins, vetches, sainfoin (fruit), ryegrasses, festulolium, cocksfoot, tall and meadow fescues and tall outgrass. | 42 | 7 | 8 | 20 | 8 | 10 | 12 |
All kinds other than field pea, field bean, lupins, vetches. | 85 | 12 | 10 | 33 | 11 | 13 | 15 |
All kinds. | 82 | 12 | 13 | 40 | 15 | 17 | 19 |
Field pea and field bean. | 78 | 15 | 15 | 40 | 18 | 20 | 22 |
These instruments shall have an aperture or apertures which shall be of sufficient size to allow the unrestricted entry of seeds or other particles and which shall be capable of being opened and closed during the sampling procedure as appropriate to the method of use described in paragraph 12(ii).
(i)Single chamber type
This instrument may be used for sampling seeds in open sacks, in large containers or in bulk.
Dimensions (mm)
Point | Shoulder | Sliding Sleeve | Aperture Length | Aperture Width | Bore | |
---|---|---|---|---|---|---|
(a) | (b) | (c) | (d) | (e) | (f) | |
For sampling: | ||||||
Seeds in sacks | 55 | 25 | 75 | 50 | 22 | 25 |
Seeds in large containers or in bulk | 100 | 390 | 63 | 50 | 22 | 30 |
(ii)Multi-chamber type
This instrument may be used to sample seeds in sacks or, subject to the requirements of paragraph 10 above, any other containers. The apertures shall open into chambers that shall be separated from one another by transverse partitions. The contents of each chamber shall be regarded as a primary sample.
Dimensions (mm)
Point | Shoulder | Aperture Length | Aperture Width | Aperture Separation | Bore | |
---|---|---|---|---|---|---|
(a) | (b) | (c) | (d) | (e) | (f) | |
For sampling: | ||||||
All kinds | 60 | 50 | 100 | 15 | 110 | 25 |
This instrument shall only be used, in accordance with the method described in paragraph 12(c) below, for sampling seed in large containers or bulk and shall only be used in the vertical position.
Seed stream samplers shall uniformly sample the cross section of the seed stream without any loss of the seeds that enter the sampler, in accordance with the method described in paragraph 12(d) below. Timing devices shall be attached so that the frequency and duration of sampling can be adjusted to meet the requirements of paragraph 9.
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