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| Chinese National Standard Category: Solid fuel ore in general |
| English Title: | Determination of yield of humic acids in coal |
| Chinese Title: | 煤中腐植酸产率测定方法 |
| Standard No.: | GB/T 11957-1989 |
| Category No.: | D20 |
| Issued by: | |
| Issued on: | |
| Implemented on: | 1990-12-1 |
| Status: | superseded |
| Superseded by: | GB/T 11957-2001 Determination of yield of humic acids in coal |
| Superseded on: | 2002-8-1 |
| Abolished on: | 2002-08-01 |
| Superseding: | |
| Word Count: | 2500 words |
| Similar Standards: | T/CNCA 016-2022 T/CNCA 013-2022 T/CNCA 010-2021 T/CCT 010-2021 GB/T 25211-2023 GB/T 29119-2023 GB/T 3715-2022 GB/T 41025-2021 GB/T 41031-2021 GB/T 25210-2021 GB/T 23251-2021 GB/T 41044-2021 GB/T 34273-2021 GB/T 31428-2021 GB/T 19559-2021 GB/T 15224.2-2021 GB/T 25217.8-2021 GB/T 25217.9-2020 GB/T 39338-2020 NB/T 10526-2021 |
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