1.1 本试验方法涵盖在任何耐下垂水平下，实验室测定水性和非水性液体涂层的耐下垂性。 图1 中程抗弧垂仪示意图 图2 中程抗弧垂仪 1.2 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 注1: 因为委员会知道的治疗探头的唯一制造商生产的是英寸- 当提及治疗探头时，磅单位、英寸-磅单位将被视为标准。 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、健康和环境实践，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====== 4.1 耐弧垂性评估对于涂料生产商和采购商的质量控制至关重要。实际应用测试的再现性较差，而粘度学方法，例如测试方法 D2196 ，耗时且缺乏实际下垂的令人信服的方面。该方法提供了简单快速的测试，通过可见的凹陷模式来证明耐凹陷性，并根据与刷洗测试观察值相关的数值进行客观评级。

1.1 This test method covers the laboratory determination of the sag resistance of aqueous and nonaqueous liquid coatings at any level of sag resistance. FIG. 1 Diagram of the Medium Range Anti-Sag Meter FIG. 2 Medium Range Anti-Sag Meter 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Note 1: Because the only manufacturer of the applicator know to the committee manufactures to inch-pound units, inch-pound units will be regarded as the standard when referring to the applicator. 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, health, and environmental 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 ====== 4.1 Evaluation of sag resistance is essential in quality control for both producers and purchasers of coatings. Practical application tests are poor in reproducibility, while viscometric methods, for example Test Methods D2196 , are time-consuming and lack the convincing aspect of actual sagging. This method provides simple and rapid tests, whereby sag resistance is demonstrated by a visible sag pattern, and is rated objectively in terms of numerical values that correlate with brushout test observations.