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Routine Test Verifications

Routine Test Verifications. Routine Test Verifications. All USDA offices conduct routine test verifications to ensure all instruments in production are on the same test level for each quality measurement A cotton with established values is utilized for the verification

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Routine Test Verifications

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  1. Routine Test Verifications

  2. Routine Test Verifications • All USDA offices conduct routine test verifications to ensure all instruments in production are on the same test level for each quality measurement • A cotton with established values is utilized for the verification • The reference level check cottons are provided to the Classing offices by the Standardization and Engineering Branch

  3. Routine Test Verifications • The reference level check cotton is tested a minimum of every two hours during each shift of operation • The reference level check cotton is tested on each instrument a minimum of two times (four combs)

  4. Routine Test Verifications • The results of the test for each instrument are transmitted to the office computer system, compared to the established values for each quality measurement, and a comparison report is generated • The comparison includes for each quality measurement the instruments observed value, deviation from the established value, and reproducibility

  5. Routine Test Verifications The test tolerances for the verifications are: Micronaire Strength Length Length Uniformity Trash Color Rd Color +b +/- 0.10 +/- 1.50 +/- 0.020 +/- 1.00 +/- 0.10 +/- 1.00 +/- 0.50

  6. Routine Test Verifications • Classing offices have the option to increase the number of tests performed and test the cotton more frequently • Classing offices also have the option to narrow the test tolerances

  7. Routine Test Verifications • The results are closely monitored by supervisory personnel • Any instrument found to be outside the allowable tolerance for any quality measurement for the verification will be taken out of production for technical investigation or calibration

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