| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| HJ 668-2013 | English | 319 |
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Days<=3
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Water quality. Determination of total nitrogen by flow injection analysis(FIA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry
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HJ 668-2013
| Valid |
HJ 668-2013
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