90.93 14. 9. 2022.
ISO/TC 146/SC 3
Specifies a method for measuring the black smoke index of an ambient air sample based on the staining effect of particles which is produced when a sample of air is drawn through a filter paper. Annex A describes conversion of absorption coefficient to traditional black smoke units.
90.93 Odluka o potvrđivanju standarda
14. 9. 2022.