Most recent
BS 1747-11:1993
Methods for measurement of air pollution. Determination of a black smoke index in ambient air (British Standard)
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.
Content Provider
British Standards Institution [bsi]