HJ 1287-2023 PDF English
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Basic data
| Standard ID | HJ 1287-2023 (HJ1287-2023) |
| Description (Translated English) | Stationary source emission - Determination of blackness of smoke plumes - Ringelmann smoke telescope |
| Sector / Industry | Environmental Protection Industry Standard |
| Word Count Estimation | 9,913 |
| Date of Issue | 2023-02-09 |
| Date of Implementation | 2023-08-01 |
| Issuing agency(ies) | Ministry of Ecology and Environment |
| Summary | This standard specifies the Ringelmann telescope method for the determination of smoke blackness in exhaust gas from stationary pollution sources. This standard applies to the determination of the blackness of the gray or black smoke emitted by stationary pollution sources at the discharge outlet, and does not apply to the determination of other colors of smoke. |