ISO 5934:1980
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Crude sodium borates for industrial use Determination of alkali-soluble copper and manganese contents Zinc bis(dibenzyldithiocarbamate) and formaldehyde oxime photometric methods
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18-02-2019
English, French
01-11-1980
Describes a method applicable to products in which the alkalisoluble copper and manganese contents excess 0,25 and 0,5 mg/kg, respectively. The principle consists in successively determining the manganese and copper contents of the two coloured complexes obtained during the analysis, followed by photometric measurements at wavelengths of about 435 nm and 450 nm, respectively.
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