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| International Standard Category: Chemical reagents |
GB 6853-1986 pH Basic line; Potassium dihydrogen phosphate
pH基准试剂 磷酸二氢钾 ;
| Category No.: | 71.040.30 | Valid Status: | superseded |
| Issued Organization: | China State Bureau of Standards | Issued Date: | 1986-09-06 |
| Implemented Date: | 1987-8-1 | Abolished Date: | |
| Superseded Standard.: | GB 6853-2008 pH Primary reagent - Potassium dihydrogen phosphate |
Superseded Date: | 2009-6-1 |
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