METHOD FOR MEASURING CONCENTRATION OF COPPER ION IN CHEMICAL COPPER PLATING LIQUID

PURPOSE:To measure the concentration of copper ion accurately by measuring the absorbance and the alkali concentration of chemical copper plating liquid, and obtaining the concentration of the copper ions in the chemical copper plating liquid by the expression of relation for the copper-ion concentr...

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Bibliographische Detailangaben
Hauptverfasser: NAKASO AKISHI, HASEGAWA KIYOSHI
Format: Patent
Sprache:eng
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