本标准实施规程描述了印刷和书写用纸在高浓度下暴露于常见大气污染物气体二氧化氮中的实验室程序，以允许此类纸加速老化。本标准实施规程规定了获取纸张相对稳定性信息所需的样品制备和暴露条件，这些信息涉及纸张暴露在常见大气污染气体中引起的机械强度和光学性能的变化。本标准实践建议使用有关纸张稳定性的定性分析方法，并建议给定纸张达到指定强度或光学性能的准确预期寿命。每个最终用户都必须定义一组指定属性的可接受极限和测试方法，并确定待测试纸张的预期寿命。

This standard practice describes a laboratory procedure for the exposure of printing and writing paper to the common atmospheric pollutant gas nitrogen dioxide at elevated levels of concentration to permit accelerated aging of such paper.This standard practice specifies the sample preparation and conditions of exposure required to obtain information on the relative stability of paper with regard to change in mechanical strength and optical properties brought about by exposure of such paper to common atmospheric pollutant gas.This standard practice suggests qualitative analysis methods regarding paper stability and suggests the exact life expectancy for a given paper to reach a specified set of strength or optical properties. The limit(s) of acceptability and the test methods for a specified set of properties must be defined by each end user and will determine the life expectancy of the paper to be tested.