1.1本试验方法涵盖了纸或纸板的加湿（相对湿度50%，温度90C）热处理程序和测试热处理材料的一般程序。目的是通过加速试验，得出纸张老化质量的推论。 1.2本试验方法基于在打印和书写纸上进行的工作，但可酌情用于其他类型的纸和纸板。本程序不适用于电绝缘纸，其测试在测试方法D 202中描述。 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。

1.1 This test method covers the procedure for humidified (50 % relative humidity and 90C) heat treatment of paper or board and the general procedure for testing the heat-treated materials. The purpose is to obtain, by an accelerated test, inferences about the aging qualities of the paper. 1.2 This test method is based on work performed on printing and writing papers but may be used with discretion for other types of papers and boards. This procedure is not intended for use with electrical insulating papers, whose testing is described in Test Methods D 202. 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.