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Norm
ÖNORM EN ISO 489
Issue date: 2022 06 01
Plastics - Determination of refractive index (ISO 489:2022)
This document specifies two test methods for determining the refractive index of plastics, namely:
— Method A: a refractometric method for measuring the refractive index...
Valid
Publisher:
Austrian Standards International
Format:
Digital | 17 Pages
Language:
German
| English
Optionally co-design standards:
ICS
This document specifies two test methods for determining the refractive index of plastics, namely:
— Method A: a refractometric method for measuring the refractive index of moulded parts, cast or extruded sheet or film, by means of a refractometer. It is applicable not only to isotropic transparent, translucent, coloured or opaque materials but also to anisotropic materials.
— Method B: an immersion method (making use of the Becke line phenomenon) for determining the refractive index of powdered or granulated transparent materials by means of a microscope. Monochromatic light, in general, is used to avoid dispersion effects.
Norm
Issue date :
2008 04 22
Plastics — Standard atmospheres for conditioning and testing
