| Standard ID | HJ/T 398-2007 (HJ/T398-2007) |
| Description (Translated English) | Stationary source emission - Determination of blackness of smoke plumes - Ringelmann smoke chart |
| Sector / Industry | Environmental Protection Industry Standard (Recommended) |
| Classification of Chinese Standard | Z25 |
| Classification of International Standard | 13.040.40 |
| Word Count Estimation | 14,158 |
| Date of Issue | 2007-12-07 |
| Date of Implementation | 2008-03-01 |
| Regulation (derived from) | SEPA Notice No. 81 of 2007 |
| Issuing agency(ies) | Ministry of Ecology and Environment |
| Summary | This standard specifies the determination of the Ringelmann blackness blackness diagram method, including the observation position and conditions of observation methods, calculation methods and standards Ringelmann blackness drawing specifications. This standard applies to emissions from stationary sources in gray or black smoke emission monitoring blackness mouth, does not apply to other colors flue gas monitoring. |
