METHOD AND APPARATUS FOR MEASURING CONCENTRATIONS OF REDUCING AGNET IN CHEMICAL COPPER PLATING SOLUTION

Title:

METHOD AND APPARATUS FOR MEASURING CONCENTRATIONS OF REDUCING AGNET IN CHEMICAL COPPER PLATING SOLUTION

Document Type and Number:

Japanese Patent JPS541093

Kind Code:

A

Abstract:

PURPOSE: To automatically measure HCHO concentrations inexpensively and readily at fast response speed and good accuracy by using two kinds of specific pH buffer solutions separately containing SO23-,I2

Inventors:

OKA HITOSHI
SATOU NOBUO
NAKAMURA KENJI

Application Number:

JP6481377A

Publication Date:

January 06, 1979

Filing Date:

June 03, 1977

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Assignee:

HITACHI LTD

International Classes:

G01N27/26; C23C18/16; C23C18/31; C23C18/40; G01N27/416; G01N27/42; G01N31/00; G05D21/00; (IPC1-7): C23C3/02; G01N27/42; G01N31/00

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