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6. Anticipating risk with minimum weighing
Minimum weighing is the smallest amount of sample required for a weighing operation to be consistent with a specific relative weighing accuracy.
Consequently, when weighing a quantity representing a minimum weighing, P min , the relative measurement uncertainty of the weighing is equal to the required weighing accuracy, Need, so that U(P min )/P min = Need. This yields the equation (9) which is used to determine the minimum weight:
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Anticipating risk with minimum weighing
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Bibliography
Standards and norms
International Organization for Standardization (ISO)
- Quality management systems – Requirements - ISO 9001 - 2015
- Prescriptions générales concernant la compétence des laboratoires d'étalonnage et d'essai. - ISO/IEC 17025 - 2005
- Measurement management systems – Requirements for measuring processes...
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Regulations
Decision of December 29, 2015 on good manufacturing practices (BO N° 2015/12 bis).
Order of March 14, 2000 on good laboratory practice (JO of March 23, 2000).
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