DIN 65669-1-1996 航空航天系列.用过的液体过滤器元件污染情况测定方法.第1部分:用材料试样作污染颗粒称重
Aerospace series - Methods for determining the contamination of used fluid filter elements - Part 1: Gravimetric determination of particulate contamination by taking material samples
The specifications laid down in this document apply to the determination of the degree of particulate contamination collected by a fluid filter element. This method can be applied for filter elements made from glass, plastic- or cellulose fibers, as well as from wire-cloth and similar materials.