What is gold number?
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Gold Number is a term used in colloidal chemistry. It is defined as the minimum amount of protective colloid in milligrams which prevents a color change from red to violet of 10ml goldsol by the addition of 1 ml of 10%NaCl solution.
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What do u mean by that...?
Are u asking the price of the gold.?
Are u asking the price of the gold.?
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