The standard ISO 16232

The standard ISO 16232 (Road vehicles - Fluid circuits - Cleanliness of components) covers the methods to be used for extracting, analysing and expressing results for cleanliness levels.

The individal parts number from 1 to 11.
Part 7: Particle sizing and counting by microscopic analysis 

JOMESA was involved in the development of this standard from the very beginning, as well as the German national version of this standard (VDA vol. 19).