ISO 14952-2:2003定义了空间流体系统清洁、分析和验证程序中使用的清洁度水平。它建立了一个通用术语，用于描述地面支持设备、运载火箭和航天器所用设备的清洁度水平。 ISO 14952-2:2003用于规定空间系统中使用的流体系统部件和设备的清洁度水平。它同样适用于地面支持设备、运载火箭和航天器。

ISO 14952-2:2003 defines the cleanliness levels used in the cleaning, analysis, and verification procedures for space fluid systems. It establishes a common nomenclature for use in describing cleanliness levels for equipment used in ground support equipment, launch vehicles and spacecraft. ISO 14952-2:2003 is used to specify the cleanliness level of fluid system components and equipment used in space systems. It is applicable equally to ground support equipment, launch vehicles and spacecraft.