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Chinese National Standard Category: Chemical fertilizer and chemical soil conditioner |
English Title: | Urea for industrial use---Determination of iron content---1 10-Phenanthroline spectrophotometric method |
Chinese Title: | 工业用尿素铁含量的测定 邻菲罗林分光光度法 |
Standard No.: | GB/T 2445-1991 |
Category No.: | G21 |
Issued by: | |
Issued on: | |
Implemented on: | 1992-10-1 |
Status: | superseded |
Superseded by: | GB/T 2441.4-2001 Determination of urea-Determination of iron content-1,10-Phenanthroline spectrophotometric method |
Superseded on: | 2002-1-1 |
Abolished on: | |
Superseding: | |
Word Count: | 1000 words |
Similar Standards: | LY/T 2749-2016 JC 216-1980 GB/T 13257-1991 NY 1107-2006 HG/T 2427-1993 GB/T 10510-2023 GB/T 18877-2020/XG1-2023 GB/T 535-2020 GB/T 535-2020/XG1-2022 GB/T 21634-2020 GB/T 15063-2020 GB/T 17420-2020 GB/T 18877-2020 GB/T 29401-2020 GB/T 21633-2020 GB/T 37918-2019 GB/T 17419-2018 GB/T 20937-2018 GB/T 2946-2018 GB/T 36207-2018 |
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