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Quality Control Tools**


OTSC Agricultural Analytical Service Accreditations


APTECA


One Sample Strategy



2022 Important Due Dates

  • Round 1: Results have been published
  • Round 2: Results have been published


2023 PT Program Dates

  • Round 1: Shipping date, January 23, 2023 | Reporting date, April 17, 2023
  • Round 2: Shipping date, July 17, 2023 | Reporting date, October 16, 2023