DIN ISO 9022-6:1999-05

The document specifies methods for the testing of optical instruments and instruments containing optical components, under equivalent conditions, for their ability to resist the influence of blowing dust. The purpose of testing is to investigate to what extent the optical, thermal, mechanical, chemical and electrical performance characteristics of the specimen are affected by blowing dust, especially with a view to malfunctions of moving parts or unacceptable wear of surface.