BSI - BS 2742
Use of the Ringelmann and Miniature Smoke Charts
|Publication Date:||31 December 1969|
|ICS Code (Chimneys, shafts, ducts):||91.060.40|
|ICS Code (Stationary source emissions):||13.040.40|
Explains the purpose and method of use of these charts for the visual assessment of the darkness of smoke emitted from chimneys.