Gravimetric Calibration and Testing of POVA (ISO8655:2022)

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Reliable and reproduceable liquid handling results depend crucially on the regular test and calibration of the instruments. The globally most accepted International Standardization Organization (ISO) standard that details requirements for producing and in-use control of piston-operated volumetric apparatus (POVA) is the ISO 8655. The aim of this white paper is to present the requirements for gravimetric calibration and testing of piston-operated volumetric apparatus (POVA) according to part 6 and part 7 of the ISO 8655 revised in 2022. This white paper presents the differences between calibration and testing according to chapters 6 and 7 , describes the testing method as well as testing environment, testing equipment and reporting requirements.