GB/T 7975-2005 in English
VALIDPaper and board-Determination of color(diffuse reflectance method)
- Issued on:2005-09-26
- Implemented on:2006-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
本标准规定了用消除光泽的漫反射法测定纸和纸板颜色的方法。 本标准不适用于加入荧光染料或颜料的纸和纸板。当仪器光源照射在试样上的紫外辐射量调准至与GB/T 7973规定的授权实验室提供的在CIE照明体D65光源条件下的荧光参比标准一致时,本标准可用于测定含有荧光增白剂的纸和纸板。
Scope
This standard specifies a method for the determination of the color of paper and board by the diffuse reflectance method with degloss. This standard does not apply to paper and paperboard with added fluorescent dyes or pigments. When the amount of ultraviolet radiation irradiated on the sample by the light source of the instrument is adjusted to be consistent with the fluorescence reference standard provided by the authorized laboratory specified in GB/T 7973 under the condition of the CIE illuminant D65 light source, this standard can be used to determine Brightener for paper and board.

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