IEC 60068-3-4:20 23 RLV包含官方IEC国际标准及其红线版本。Redline版本仅提供英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 60068-3-4:20 23提供了环境测试中湿度影响的必要信息和基本原则，以协助准备相关规范，例如组件或设备的标准。此外，还提供了有关操作气候试验箱的信息。这第二版取消并取代了2001年出版的第一版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:a)对蒸馏水和去离子水的要求进行了修订； b)已包括测试室清洁程序的建议； c)增加了加湿系统（超声波加湿器和雾化器）； d)对水渗透机理的描述已经细化。

IEC 60068-3-4:2023 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

IEC 60068-3-4:2023 provides the necessary information and the basic principles of the effect of humidity in the context of environmental testing to assist in preparing relevant specifications, such as standards for components or equipment. Furthermore, information is provided on operating climatic test chambers. This second edition cancels and replaces the first edition published in 2001. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) the requirements for distilled and deionized water have been revised;
b) recommendations for the cleaning procedure of test chambers have been included;
c) humidification systems (ultrasonic humidifiers and atomizers) have been added;
d) the description of water penetration mechanisms has been refined.