What does reciprocal of gold number …
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Posted by Ankit Singh 6 years, 11 months ago
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Yogita Ingle 6 years, 11 months ago
Gold number is the minimum amount of protective/lyophilic colloid in milligrams which prevents the flocculation of 10ml gold sol by the addition of 1 ml of 10%NaCl solution.
Reciprocal of gold number indicates the protective power of a colloid. Smaller is the gold number, more is the reciprocal and thus more is the protecting power of the protective colloid.
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