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GB/T 40231-2021 English PDF (GBT40231-2021)

GB/T 40231-2021 English PDF (GBT40231-2021)

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GB/T 40231-2021: Restricted substance in electrical and electronic products - Determination of hexavalent chromium - Ion chromatography method
This Standard specifies the ion chromatography method for the determination of hexavalent chromium in electrical and electronic products. This Standard is applicable to the determination of hexavalent chromium content in polymer materials for electrical and electronic products.

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