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This round is designed for purity, other seed determination, germination, and viability testing.

Participants should test the samples and report the results in accordance with the current ISTA Rules.

Accredited laboratories are required to participate in all tests for which they hold accreditation. Laboratories not accredited for these tests may participate on a voluntary basis.

Purity Analysis: the sample weight of the test round is based on the weight of 2500 seeds and it can differ from the weight prescribed in Table 2C.

Other Seed Determination: the number and species names of other seeds found shall be reported in alphabetical order in accordance with the accepted names in the current ISTA List of Stabilized Plant Names.

Submitting results

A blank Orange International Seed Lot Certificate has been enclosed in order to give all participants the opportunity to practice reporting on OIC. It does not involve any form of rating but will help participants and ISTA to identify weak points in reporting.

The certificate shall be filled in with results for Lot. No. 1 in addition to the forms provided with this instruction letter.

When completing the Certificate, please use the following information:
  • Applicant: “ISTA Secretariat”, postal address
  • Weight of the lot: 10,000kg
  • Category: “Certified Seed”
  • Sampling by: assume your laboratory performed the sampling
  • Number of containers: 250
  • Date of sampling: July 15, 2021
  • Mark of the lot: ISTA 2000 PAR
Please report the results of all tests you performed. The certificate shall be a final certificate.

The remaining seed shall be carefully stored for re-testing or follow-up corrective actions if required. There should be sufficient seed for one re-test.

You are kindly asked to initiate the tests within 3 weeks after receipt of the samples, and report the results by e-mail to (pt@ista.ch).

Deadline for reporting: 1 November 2021


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