1.1 本规范涵盖了通过规定的光弹性测量程序确定的可重复使用退火玻璃实验室设备中的热残余应力极限。 1.2 在广义分类中，本规范涵盖的实验室玻璃器皿包括但不限于: 烧杯 伊姆霍夫锥 瓶子，吸引器 吸收瓶 瓶子，掉落 罐子，电池 瓶子，气体清洗 罐子，贝尔 瓶子，输液 罐，色谱法 奶瓶，牛奶测试 圆筒形罐 试剂瓶 球窝接头或标准圆锥接头 瓶子，称重 压力计 灯泡，吸收 渗滤器 灯泡，调平 比重瓶 灯泡，取样 活塞 滴定管 离心管 冷凝器 试管，色谱法 结晶盘 管，颜色比较（浊度） 文化菜肴 燃烧管（点火） 定制设备 管、连接和适配器 量筒，带刻度 消化管 和平原 管子，干燥 干燥器 试管，发酵 萃取管 蓟管（喷雾器） 烧瓶 蒸汽收集器 烧结制品 粘度计 漏斗 手表眼镜 发电机，Kipp 纸巾研磨机 1.3 本规范承认光弹性测量值与主应力差成正比。施加的极限代表一个安全系数，以涵盖其中一个主应力可能大于表观应力的情况。 1.4 本规范仅适用于拟作为退火玻璃器皿销售的退火玻璃器皿。它不包括经过热回火、离子交换或用不同膨胀的玻璃层层压的玻璃器皿。本规范的目的是限制剩余应力，以便消费者在退火玻璃中安全使用，因为它离开了制造商。 1.5 本规范涵盖了玻璃器皿内热膨胀差异引起的应力。不包括分级密封和玻璃金属密封。 1.6 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。

1.1 This specification covers a limit for thermal residual stress in reusable annealed glass laboratory apparatus as determined by prescribed photoelastic measurement procedures. 1.2 In broad classification, the laboratory glassware items covered by this specification, but not limited to, are: beakers Imhoff cones bottles, aspirator impingers bottles, dropping jars, battery bottles, gas washing jars, bell bottles, infusion jars, chromatography bottles, milk test jars, cylindrical bottles, reagent joints, ball and socket or standard taper bottles, weighing manometers bulbs, absorption percolators bulbs, leveling pycnometers bulbs, sampling stopcocks burets tubes, centrifuge condensers tubes, chromatography crystallizing dishes tubes, color comparison (turbidity) culture dishes tubes, combustion (ignition) custom apparatus tubes, connecting and adapter cylinders, graduated tubes, digestion and plain tubes, drying desiccators tubes, fermentation extraction tubes tubes, thistle (spray traps) flasks vapor traps fritted ware viscometers funnels watch glasses generators, Kipp grinder, tissue 1.3 This specification recognizes that photoelastic measurements are proportional to the difference of the principal stresses. The limit imposed represents a safety factor to cover a situation in which one of the principal stresses may be larger than the apparent stress. 1.4 This specification applies only to annealed glassware that is intended for sale as such. It excludes glassware that has been thermally tempered, ion-exchanged, or laminated with glass layers of differing expansion. The intent of this specification is to limit the residual stresses for safe consumer use in annealed glass, as it leaves the manufacturer. 1.5 Stresses introduced by thermal expansion differences within the glassware are covered by this specification. Graded and glass-to-metal seals are excluded. 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.