Sampling

• 2024.10.18

  The “CKIC Cup” Vocational Skills Competition for Coal Quality Testing, Sampling, and Sample Preparation Officially Launched

  

  The “CKIC Cup” Vocational Skills Competition for Coal Quality Testing, Sampling and Sample Preparation in the National Coal Industry, kicked off in Changsha on the morning of October 16th, 2024.

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• 2017.05.12

  ISO Standard that CKIC Involved is Officially Released

  

  ISO13909-2016 Hard coal and coke -- Mechanical sampling is an international standard participation in revised by Standardization Administration of the People's Republic of China (SAC) and CKIC, which is officially released in July 1st, 2016. SAC is the participating members of International Organization of Standardization of...

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• 2016.10.31

  Brief Discussion on Sampling Precision

  

  1. Precision and Accuracy a. Precision Precision refers to consistency in the independent test results under prescribed conditions. b. Accuracy Accuracy refers to the consistency between the test result and the measured true value or the conventional truth value. The figure below clearly shows the relationship between p...

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