涂料和清漆用粘合剂.树脂.色泽检验的取样和试样制备

[中文适用范围]： 本国际标准规定了从以下材料中取样的程序： ——桶， — 熔融/液体形式， — 薄片、颗粒或锭剂，以及颜色测量样品的制备。 其他标准中规定了用于颜色测量的方法。 松香的颜色可以用纯松香或松香溶液来测量。 两种最常用的颜色测量方法是基于 USDA1) 色标和加德纳色标的方法。 附录 A 提供了这两个量表之间相关性的信息。 [外文原描述]： This International Standard specifies a procedure for sampling of rosin and rosin derivatives from — drums, — the molten/liquid form, — flakes, pellets or pastilles and preparation of the samples for colour measurement. The method to be used for the colour measurement is specified in other standards. The colour of the rosin can be measured with neat rosin or rosin in solution. The two most commonly used colour-measurement methods are those based on the USDA1) scale and the Gardner colour scale. Annex A provides information on the correlation between these two scales.