| 1.62 | quantity value |
| value of a quantity |
| value |
| Number and reference together expressing magnitude of a quantity. |
| | Example 7: | Rockwell C hardness of a given sample: 43.5 HRC. |
| Example 8: | Mass fraction of cadmium in a given sample of copper alloy: 3 µg/kg or 3 × 10−9. |
| Example 9: | Molality of Pb2+ in a given sample of river water: 1.76 µmol/kg. |
| Example 10: | Arbitrary amount-of-substance concentration of lutropin in a given sample of human blood plasma (WHO International Standard 80/552 used as a calibrator): 5.0 IU/l, where “IU” stands for “WHO International Unit”. |
| Note 1: | According to the type of reference, a quantity value is either — a product of a number and a measurement unit (see Example 9); the measurement unit one is generally not indicated for quantities of dimension one, (see Example 8), or — a number and a reference to a measurement procedure (see Example 7), or — a number and a reference material (see Example 10).
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| Source: [VIM 1.19] with Examples 1 to 6 and Notes 2 to 4 omitted, and with minor amendment to Example 8. See also: true quantity value. |