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A chart, printed in shades of grey matt lacquer, which when held at about 5 ft from the observer gives readings of the density values of smoke from chimneys. These are comparable with those obtained from the BS Ringelmann Chart (BS 2742C). The method of use is explained in BS 2742.
| Author | BSI |
|---|---|
| Editor | BSI |
| Document type | Standard |
| Format | File |
| Confirmation date | 2016-08-01 |
| EAN ISBN | 0 580 39167 1 |
| ICS | 13.040.40 : Stationary source emissions
91.060.40 : Chimneys, shafts, ducts |
| Year | 1960 |
| Country | United Kingdom |
| Keyword | BS 2742:1969 |