本文件规定了实验室湿分解机械纸浆的设备和程序，这些纸浆在测量亮度时表现出潜伏性。该设备和程序可用于处理纸浆的其他国际标准中测试部分的制备。 本文件适用于所有表现出潜伏性的机械纸浆（即机械、半化学和化学机械纸浆）。

This document specifies an apparatus and the procedures for the laboratory wet disintegration of mechanical pulps that exhibit latency except when brightness is measured. This apparatus and procedure can be used for preparation of the test portion in other International Standards dealing with pulps. This document is applicable to all kind of mechanical pulps (i.e. mechanical, semi-chemical and chemi-mechanical pulps) exhibiting latency.