1.1 这些试验方法描述了与玻璃容器退火状态相关的相对光学延迟的测定。涵盖以下两种替代试验方法: 小节 试验方法A-与参考标准的比较 使用偏光镜 6 – 9 试验方法B-用旋光仪测定 10 – 12 1.2 试验方法A可用于确定小于150 nm的延迟，而试验方法B可用于确定小于565 nm的延迟。 注1: 由这些试验方法确定的表观回火数主要取决于( 1. )玻璃中残余应力的大小和分布( 2. )玻璃的厚度（分级点的光程长度），以及( 3. )玻璃的成分。对于所有常用的钠钙硅瓶玻璃成分，成分的影响可以忽略不计。在检查容器底部时，可使用以下公式考虑玻璃厚度，该公式定义了实际回火数， T R ，就表观回火数而言， T A. ，以及底部厚度， t : 该厚度应在最大表观延迟位置测量。要解释真实或明显的回火数，需要对所评估的特定器皿有实际经验。 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 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 这两种测试方法用于评估退火质量。这些测试方法可用于玻璃容器或类似玻璃成分制成的其他产品的质量控制，其中必须验证退火程度，以确保产品质量。 这些试验方法适用于由商用钠钙硅玻璃成分制成的玻璃容器。

1.1 These test methods describe the determination of relative optical retardation associated with the state of anneal of glass containers. Two alternative test methods are covered as follows: Sections Test Method A—Comparison with Reference Standards Using a Polariscope 6 – 9 Test Method B—Determination with Polarimeter 10 – 12 1.2 Test Method A is useful in determining retardations less than 150 nm, while Test Method B is useful in determining retardations less than 565 nm. Note 1: The apparent temper number as determined by these test methods depends primarily on ( 1 ) the magnitude and distribution of the residual stress in the glass, ( 2 ) the thickness of the glass (optical path length at the point of grading), and ( 3 ) the composition of the glass. For all usual soda-lime silica bottle glass compositions, the effect of the composition is negligible. In an examination of the bottom of a container, the thickness of glass may be taken into account by use of the following formula, which defines a real temper number, T R , in terms of the apparent temper number, T A , and the bottom thickness, t : This thickness should be measured at the location of the maximum apparent retardation. Interpretation of either real or apparent temper number requires practical experience with the particular ware being evaluated. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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 These two test methods are provided for evaluating the quality of annealing. These test methods can be used in the quality control of glass containers or other products made of similar glass compositions, where the degree of annealing must be verified to ensure quality products. These test methods apply to glass containers manufactured from commercial soda-lime-silica glass compositions.