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 BIPM Mass Department |
 Complete list of uncertainties for services offered to the NMIs by the BIPM in Mass and related quantities
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| Mass. Prototype kilogram, 1 kg
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| Absolute expanded uncertainty (k = 2, level of confidence 95%) in µg: 9
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| Comparison in air |
| Mass. Mass standards, 1 kg
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| Absolute expanded uncertainty (k = 2, level of confidence 95%) in µg: 20
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| Comparison in air |
| Volume of solid. Mass standard: 0.5 kg to 1 kg, 23 cm3 to 125 cm3
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| Absolute expanded uncertainty (k = 2, level of confidence 95%) in mm3: 0.88
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| Hydrostatic weighing |
| Reference temperature: 20 °C |
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Traceability to the SI through the BIPM |
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