1.1 这些试验方法包括硫酸的分析。 1.2 以国际单位制表示的数值应视为标准值。括号中给出的值仅供参考。 1.3 分析程序按以下顺序出现: 小节 总酸度 8. 到 16 波美引力 17 到 26 非挥发性物质 27 到 33 铁 34 到 43 二氧化硫 44 到 51 砷 52 到 61 1.4 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。 具体危害说明见第节 5. . ====意义和用途====== 3.1 这些试验方法规定了不同等级硫酸的分类和各种杂质的测定。酸强度和杂质水平是硫酸许多用途中的重要因素。

1.1 These test methods cover the analysis of sulfuric acid. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.3 The analytical procedures appear in the following order: Sections Total Acidity 8 to 16 Baumé Gravity 17 to 26 Nonvolatile Matter 27 to 33 Iron 34 to 43 Sulfur Dioxide 44 to 51 Arsenic 52 to 61 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 5 . ====== Significance And Use ====== 3.1 These test methods provide for the classification of various grades of sulfuric acid and for the determination of various impurities. Acid strength and impurity levels are important factors in many uses of sulfuric acid.