OIML G18 Controlled Vocabulary Julia Neumann 2022-12-16 2023-01-02 10:32:57 en-EN refractometer #01406 refractometers are instruments for measuring the refractive index. If they are provided with appropriate scales, they are used to determine the content of sugar in liquids, in which case the relation between the mass fraction and the refractive index shall have been specified (see 3) 2022-12-19 09:13:38