1.1 本试验方法涵盖了氟石中二氧化硅的测定，浓度为0.5 % 至10 %. 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 5.1 本试验方法旨在作为符合杂质含量成分规范的参考方法。假设所有使用该程序的人都是经过培训的分析员，能够熟练、安全地执行常见的实验室操作。预计工作将在配备适当的实验室进行，并遵循适当的废物处理程序。 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 silica in fluorspar in concentrations from 0.5 % to 10 %. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 5.1 This test method is intended as a referee method for compliance with compositional specifications for impurity content. It is assumed that all who use this procedure will be trained analysts capable of performing common laboratory practices 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. Follow appropriate quality control practices such as those described in Guide E882 .