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NEN ISO 489:1984被替代

Plastics - Determination Of The Refractive Index Of Transparent Plastics

出版：Nederlands Normalisatie Instituut

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基本信息
標(biāo)準(zhǔn)編號(hào)： NEN ISO 489:1984
發(fā)布時(shí)間：1984/4/1 0:00:00
標(biāo)準(zhǔn)類別：Standard
出版單位：Nederlands Normalisatie Instituut
標(biāo)準(zhǔn)頁(yè)數(shù)：4
標(biāo)準(zhǔn)簡(jiǎn)介

Defines two methods for determining the refractive index of transparent plastics. Method A: Refractometric method for measuring the refractive index of transparent cast, moulded or sheet materials by means of a refractometer. The method is recommended when great accuracy is required. It is not applicable to powdered or granulated transparent materials. Method B: Immersion method (Becke line phenomenon) for determining the refractive index of powered or granulated transparent materials by means of a microscope and making use of the Becke line phenomenon.

替代本標(biāo)準(zhǔn)的新標(biāo)準(zhǔn)

NEN EN ISO 489:1999

等同采用的國(guó)際標(biāo)準(zhǔn)

ISO 489:1999 - Identical