1.1 本试验方法包括氟化钙的测定 2 ）在酸级萤石和其他类型的萤石中，这些萤石可以通过测试方法中描述的程序使其可溶。 1.2 以SI单位表示的值被视为标准值。本标准不包括其他计量单位。 1.3 根据实践对该试验方法进行了评价 E1601 和指南 E1763 除非精密度和偏倚部分另有说明，否则每种方法范围内的下限规定了可接受误差分析的最低分析物含量（定义为在两个实验室中获得相同供试品结果50%或更大相对差异的标称5%风险）。 1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 5.1 萤石在炼钢和玻璃工业以及制造HF中用作助熔剂。 5.2 本试验方法旨在检测CaF是否符合成分质量标准 2 知足。假设所有使用这些程序的人员都是训练有素的分析员，能够熟练和安全地执行常见的实验室程序。预计工作将在设备适当的实验室中进行，并遵循适当的废物处理程序。必须遵循适当的质量控制实践，如指南中所述 E882 .

1.1 This test method covers the determination of calcium fluoride (CaF 2 ) in acid-grade fluorspar and other types of fluorspar that can be rendered soluble by the procedure described in the test method. 1.2 The values stated in SI units are regarded as standard. No other units of measurement are included in this standard. 1.3 This test method has been evaluated in accordance with Practice E1601 and Guide E1763 . Unless otherwise noted in the precision and bias section, the lower limit in the scope of each method specifies the lowest analyte content that may be analyzed with acceptable error (defined as a nominal 5 % risk of obtaining a 50 % or larger relative difference in results on the same test sample in two laboratories). 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Fluorspar is used as a flux in the steelmaking and glass industries, and in the manufacture of HF. 5.2 This test method is intended to test for compliance with compositional specifications for CaF 2 content. It is assumed that all who use these procedures will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Appropriate quality control practices must be followed such as those described in Guide E882 .