White Paper: Minimum Sample Weights According to USP <41>, OIML R 76 and EURAMET cg-18
Authors: Dr Julian Haller, Dr. Ellen Hage, Niclas Ludolph, Axel Taube | Last updated: September 2020
Overview
What is the minimum amount a sample should weigh in order to obtain a reliable weighing result? The smaller the weight of a sample, the larger the relative measurement uncertainty. Various concepts are in place for specifying corresponding minimum sample weights so as not to exceed specified relative measurement uncertainties.
Some of the most well-known concepts regarding minimum sample weights are those according to Chapter 41 of the US Pharmacopeia, R76 of the International Organization of Legal Metrology and Calibration Guideline 18 according to the European Association of National Metrology.
- Document type: White paper
- Page count: 9
- Read time: 8 minutes
Key Takeaways
- Learn how minimum sample weight is calculated according to USP and other guidelines
- Learn what relative uncertainty is
- Learn about the key points of the minimum sample weight concept
This Resource is Designed for:
- Staff scientist
- Lab manager
- Lab technician
- Compliance expert/Quality Control
- Academic
- Lab director
- Lab Head
- Pharmacalogy
Applications Supported:
- Metrology
- Pharmaceutical industry
- Calibration of non-automatic weighing instruments
