| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| HJ 636-2012 | English | 85 |
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Water quality. Determination of total nitrogen. Alkaline potassium persulfate digestion UV spectrophotometric method
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HJ 636-2012
| Valid |
HJ 636-2012
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