– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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Calibration and measurement services: Mass

BIPM Mass Department
 Complete list of uncertainties for services offered to the NMIs by the BIPM in Mass and related quantities

Mass. Prototype kilogram, 1 kg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in µg: 9
Comparison in air

Mass. Mass standards, 1 kg
Absolute expanded uncertainty (k = 2, level of confidence 95%) in µg: 20
Comparison in air

Volume of solid. Mass standard: 0.5 kg to 1 kg, 23 cm3 to 125 cm3
Absolute expanded uncertainty (k = 2, level of confidence 95%) in mm3: 0.88
Hydrostatic weighing
Reference temperature: 20 °C


Traceability to the SI through the BIPM
Subject area:
What is traceability?
BIPM policy on stating uncertainties
Summary charts: Technical services per Member State
Chemistry
Electricity
Ionizing Radiation
Mass
Time
Related articles:
Comparisons piloted by the BIPM
BIPM calibration and measurement services
BIPM work programme
Joint BIPM, OIML, ILAC and ISO declaration on metrological traceability