When a committee is getting ready to ballot a new test method, do they need to have a precision and bias statement?
Yes, when balloting a new test method, repeatability is required in the precision and bias section. Per the ASTM Form and Style Manual Section A21.2.2 Every test method shall contain a statement (1) regarding the precision of test results obtained in the same laboratory under specifically defined conditions of within-laboratory variability (repeatability conditions). To produce repeatability conditions, one lab should test a range of samples numerous times. The recommended amount of replicates is as many as 10-20.
Related Questions
- How long should a committee wait after the development of a standard test method to include a precision and bias statement?
- When a committee is getting ready to ballot a new test method, do they need to have a precision and bias statement?
- What happens if we find an old standard test method without a precision and bias statement? Is it grandfathered in?
