WHAT WE DO / PT / Test Rounds
  PT19-2 Brassica napus        
  Standard Proficiency Test | GMO Proficiency Test | Seed Health Proficiency Test
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
Please note that 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 2A.

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

Submitting Results
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. Laboratories shall receive an electronic copy of the report forms. You are kindly asked to initiate the tests within 3 weeks after receipt, and report the results by e-mail (to pt@ista.ch).

Deadline for reporting: 1 November 2019


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STI 157 April 2019

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