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  4. Standard "GB/T 12690.20-1990"
WITHDRAWN GB/T 12690.20-1990 1.1.1990 preview

GB/T 12690.20-1990

Rare-earth metals and their oxides--Determination of iron content--Potassium thiocyanate, 1, 10-phenanthroline spectrophotometric method

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STANDARD published on 1.1.1990


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248.80 USD

The information about the standard:

Designation standards: GB/T 12690.20-1990
Note: WITHDRAWN
Publication date standards: 1.1.1990
SKU: NS-1230444
Country: Chinese technical standard
Category: Technical standards GB

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