SWI 132.1.1 Seed Program
Specific Work Instruction
Official Seed Sampling

Appendix VI: Checklist for Sampling for Domestic and Blue International Seed Sample Certificate Purposes

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The sampler must:

  1. communicate with the operator, grower, owner/manager of the establishment;
  2. verify that the seed lot is accessible. Section 11.5 provides some exceptions;
  3. verify that there is no evidence that the lot has been tampered with;
  4. verify that all containers are labelled with lot number, net quantity of seed by weight or numerical count, name and address of the seller, packager or labeler, name of the crop kind, name of the grade of the seed, and variety name, if applicable;
  5. where tags are affixed to a seed lot, verify that the information on the tag corresponds to all the documentation;
  6. determine the size of the seed lot in order to establish the correct sampling intensity. There are no maximum lot sizes for domestic product or for issuance of Blue International Seed Sample Certificates;
  7. verify that the seed lot is sealed whether the seed is pedigreed or non-pedigreed seed. Pedigreed seed lots must be sealed in a tamper-proof manner;
  8. select the appropriate approved sampling method based on the packaging of the seed and crop kind as specified in Appendix I;
  9. prior to sampling, triers and equipment must be thoroughly cleaned and the adjacent area surrounding the seed lot must be free of foreign/contaminating material;
  10. sample according to the sampling intensities specified in Appendix II;
  11. sample the seed lot using the appropriate technique for the selected trier or method as described in Section 7;
  12. not insert triers through labels or printed labelling on the containers;
  13. when drawing samples, take approximately equal amounts of seed from each container sampled, or from each place in such container, or when sampling seed in bulk, from each location sampled;
  14. thoroughly clean the container/pail in which the sample is placed as it is drawn at the beginning of the sampling procedure and after each sampling operation;
  15. close the holes in jute or poly bags made by the trier by running the point of the trier across the hole a couple of times in opposite directions to pull the threads together to close the holes. When the holes cannot be closed by this method, suitable adhesive patching tape/labels must be used. The patch should be signed and dated by the sampler;
  16. check each primary sample for uniformity as to seed lot homogeneity described in Section 10.0. Where there is evidence that the primary samples and/or the seed lot is not homogenous, this must be stated on the SSF;
  17. combine the primary samples to form the composite sample. The composite sample is submitted to the laboratory (submitted sample) except, in some cases, the composite sample of the large seeded crop kinds may be mixed and divided as described in Section 13.1;
  18. The submitted sample must be labelled, sealed, and packaged securely for shipment to the laboratory as soon as is practicable (Section 15).
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