General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 17531-1998
Scope
This standard specifies the criteria for evaluating the accuracy and deviation of the results of chemical test methods for rubber and rubber products. These guidelines are supplementary to GB 4471 and GB/T 14888, and give the representation of accuracy and deviation. This standard applies to the evaluation of the accuracy of the test method, and is limited to the following test method criteria: -- which test results are expressed as quantitative continuous variables; -- which test results can be expressed quantitatively in the test items. The accuracy and bias expressed by the laboratory test can be evaluated as follows: a) The adequacy of the test method to comply with the laboratory test, this adequacy refers to the accuracy of the method and the fixed deviation of the value is small BF, relative deviation BR. b) operator bias; c) sample bias.
GB/T 17531-1998 history
1998GB/T 17531-1998 Rubber and rubber products--Determination of accuracy and bias of chemical test methods