90.93 Standard confirmed Sep 14, 2022
ISO
ISO/TC 146/SC 3 Ambient atmospheres
International Standard
13.040.20 Ambient atmospheres
Published
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.
PUBLISHED
ISO 9835:1993
90.93
Standard confirmed
Sep 14, 2022