GOLD NUMBER OF SOME PROTECTIVE COLLOIDS
| Protective (Lyophilic) Colloid | Gold Number |
| Gelatin | 0.005-0.01 |
| Casein | 0.01-0.02 |
| Haemoglobin | 0.03-0.07 |
| Egg albumin | 0.08-0.10 |
| Gum Arabic | 0.10-0.15 |
| Dextrin | 6-20 |
| Starch | 20.25 |
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