1.1 这些试验方法包括硫酸的分析。 1.2 以下内容适用于确定使用该测试方法的测试结果是否符合适用规范的目的，应根据实践中的舍入方法对结果进行舍入 第29页 . 1.3 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.4 分析程序按以下顺序显示: 小节 总酸度 8. 到 16 Baumé重力 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 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 查阅当前OSHA法规、供应商的安全数据表以及本规范中使用的所有材料的当地法规。 具体危害说明见第节 5. . 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《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====== 3.1 这些试验方法规定了各种等级硫酸的分类和各种杂质的测定。在硫酸的许多用途中，酸强度和杂质水平是重要因素。

1.1 These test methods cover the analysis of sulfuric acid. 1.2 The following applies for the purposes of determining the conformance of the test results using this test method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29 . 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.4 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 1.5 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. Consult current OSHA regulations, suppliers’ Safety Data Sheets, and local regulations for all materials used in this specification. Specific hazards statements are given in Section 5 . 1.6 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 ====== 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.