标准摘要
[中文适用范围]： 规定了氟化钠/三氟化铝摩尔比约为 3 至 1.7 的粗样品和干燥样品以及天然和合成材料的制备程序。 粗样品用于确定几何特征、某些物理和物理化学测试以及水分测定。 干燥后的样品特别适用于化学测试。 该程序的原理包括研磨，然后对样品进行筛分，直到整个样品通过孔径为 0.125 mm 的筛子。 充分混合并在约110℃下干燥。 [外文原描述]： Specifies the procedure for the preparation of crude samples and dried samples and of natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The crude sample is intended for the determination of geometric characteristics, for certain physical and physico-chemical tests and for moisture determination. The dried sample serves especially for chemical tests. The principle of the procedure consists in grinding followed by sieving of the sample until the whole passes through a sieve of mesh aperture 0,125 mm. Thorough mixing and drying at approximately 110 °C.
英文名称Cryolite, natural and artificial — Preparation and storage of test samples