1.1 本规程涵盖了以代表海水的比例和浓度制备含有无机盐的溶液。 2. 注1: 由于海水浓度随采样位置而变化，因此本文采用的总浓度是许多可靠单独分析的平均值。不包括浓度低于0.005 mg/L的天然微量元素。 1.2 这种做法提供了三种储备溶液，每种溶液相对集中，但在储存中稳定。为了制备替代海水，将前两份原液的小份与添加的盐合并成更大体积。 通过向前一种溶液中添加一小份第三种储备溶液，对重金属浓度的调整进行了进一步的细化。 1.3 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。 1.4 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、健康和环境实践，并确定监管限制的适用性。 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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 这种替代海水可用于实验室测试，其中需要模拟海水的可再生溶液。例如油污染测试、清净性评估和腐蚀测试。 注2: 该溶液中缺乏有机物、悬浮物和海洋生物，不允许不合格地接受代表实际海水中性能的测试结果。在涉及腐蚀的情况下，从实验室测试中获得的结果可能与在自然测试条件下获得的结果不太接近，这些自然测试条件与实验室的结果有很大差异，尤其是在涉及速度、盐气氛或有机成分影响的情况下。 此外，低浓度反应元素的快速消耗表明直接应用结果时要谨慎。

1.1 This practice covers the preparation of solutions containing inorganic salts in proportions and concentrations representative of ocean water. 2 Note 1: Since the concentrations of ocean water varies with sampling location, the gross concentration employed herein is an average of many reliable individual analyses. Trace elements, occurring naturally in concentrations below 0.005 mg/L, are not included. 1.2 This practice provides three stock solutions, each relatively concentrated but stable in storage. For preparation of substitute ocean water, aliquots of the first two stock solutions with added salt are combined in larger volume. An added refinement in adjustment of heavy metal concentration is provided by the addition of a small aliquot of the third stock solution to the previous solution. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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 ====== 4.1 This substitute ocean water may be used for laboratory testing where a reproducible solution simulating sea water is required. Examples are for tests on oil contamination, detergency evaluation, and corrosion testing. Note 2: The lack of organic matter, suspended matter, and marine life in this solution does not permit unqualified acceptance of test results as representing performance in actual ocean water. Where corrosion is involved, the results obtained from laboratory tests may not approximate those secured under natural testing conditions that differ greatly from those of the laboratory, and especially where effects of velocity, salt atmospheres, or organic constituents are involved. Also the rapid depletion of reacting elements present in low concentrations suggests caution in direct application of results.