| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| HG/T 2157-1991 | English | 199 |
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Days<=2
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Determination of ammonium in industrial circulating cooling water Potential method
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HG/T 2157-1991
| Obsolete |
HG/T 2157-1991
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