Glossary · Manufacturing
What Is Calibration?
Calibration is the periodic verification of a measuring instrument against a traceable reference, so that the numbers it produces can be relied on. In cosmetics it covers balances, thermometers, pH meters, viscometers and line checkweighers, and the calibration records form part of the batch documentation.
Why it matters when you source
A pH reading from an uncalibrated meter is an opinion rather than a measurement. Calibration is the quiet control behind every specification number on a CoA, so ask how often instruments are calibrated and who issues the certificates.
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