- Sku: 3102
- Vendor: Ulster Ceramics Pottery Supplies
Code 3102 Cobalt Oxide. Co3O4. A very strong colourant, and also a secondary flux (i.e. it will make glazes runnier!). Gives a strong blue colour, more vivid and slightly purplish in an alkaline glaze. 0.25-1% addition. Harmful.
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