1.1 本规程描述了通过化学显微镜检查水形成沉积物的程序。本规程可用于补充规程中建议的其他检查水形成沉积物的方法 D2331 或者，当没有其他仪器可用或样本量非常小时，可以单独使用。 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。 1.4 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====== 5.1 水形成沉积物的化学成分是工艺水化学处理适当或不当的主要指标，并且通常也是操作参数的指标，例如温度控制。这种做法允许快速测定这些沉积物中存在的成分，特别是那些水处理不当的迹象，因为它们通常具有非常独特且易于识别的光学特性。 5.2 在适用的情况下，这种做法消除了对详细化学分析的需要，这是时间- 这并不总是揭示阳离子和阴离子是如何相互结合的。 5.3 本规程的定性使用应限于根据处理和给水矿物含量，其控制通常已知或可预测，并且其成分为晶体，或以其他方式具有光学或形态特征的沉积物。如果不符合这些标准，则应使用其他分析技术，如实践 D2332 或试验方法 D3483 ，或两者兼而有之。 5.4 这种做法的定量使用应仅限于估计。 对于更精确的定量结果，应使用其他方法（参见 5.3 ).

1.1 This practice describes a procedure for the examination of water-formed deposits by means of chemical microscopy. This practice may be used to complement other methods of examination of water-formed deposits as recommended in Practices D2331 or it may be used alone when no other instrumentation is available or when the sample size is very small. 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. 1.4 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 Chemical composition of water-formed deposits is a major indicator of proper or improper chemical treatment of process water, and is often an indicator of operational parameters as well, for example, temperature control. This practice allows for rapid determination of constituents present in these deposits, particularly those indications of improper water treatment, since they usually have very distinctive and easily recognized optical properties. 5.2 This practice, where applicable, eliminates the need for detailed chemical analysis, which is time-consuming, and which does not always reveal how cations and anions are mutually bound. 5.3 Qualitative use of this practice should be limited to those deposits whose control is generally known or predictable, based on treatment and feedwater mineral content, and whose constituents are crystalline, or in other ways optically or morphologically distinctive. If these criteria are not met, other techniques of analysis should be used, such as Practice D2332 or Test Methods D3483 , or both. 5.4 Quantitative use of this practice should be limited to estimates only. For more precise quantitative results, other methods should be used (see 5.3 ).