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GB/T 9721-2006 English PDF (GBT9721-2006)

GB/T 9721-2006 English PDF (GBT9721-2006)

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GB/T 9721-2006: Chemical reagent -- General rules for the molecular absorption spectrophotometry (ultraviolet and visible)
This standard specifies the instrument requirements and determination methods of chemical reagent molecular absorption spectrophotometry (ultraviolet and visible). This standard applies to the determination of the impurity contents in the chemical reagent of the absorption wavelength between 200 nm ~ 850 nm AND the qualitative and quantitative analysis of the organic chemical reagents, indicators, and special reagents.

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