Plastics. Determination of refractive index Ingestion-build-78747 BS EN 3324 is a

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Plastics. Determination of refractive index Ingestion-build-78747 BS EN 3324 is a1 Scope This International Standard 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. The method is recommended when great accuracy is