ISO 9912-1:2004定义了用于农业微灌系统（尤其是加压系统）的过滤器的相关术语，并提供了根据过滤方法、结构、工作原理和功能对这些过滤器进行分类的方法。它不涉及根据拟过滤水的类型进行分类；它也不适用于饮用水或生活用水过滤器的分类。

ISO 9912-1:2004 defines terms used in relation to filters intended for agricultural micro-irrigation systems -- in particular, pressurized systems -- and provides a means of classifying those filters according to filtration method, structure, operating principle and function. It does not deal with classification according to the type of water intended to be filtered; nor does it apply to the classification of filters for potable or domestic water use.