81 World Health Organization who technical Report Series, No. 957, 2010


Reference substances and reference materials



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pharmaceutical analysis
Reference substances and reference materials
11.1 Reference substances (primary reference substances or secondary reference substances (8)) are used for the testing of a sample.
Note: Pharmacopoeial reference substances should be employed when available and appropriate for the analysis. When a pharmacopoeia reference substance has not been established then the manufacturer should use its own reference substance Reference materials maybe necessary for the calibration and/or qualifi cation of equipment, instruments or other devices.

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