Cobalt Oxide Designer Silkscreens While the glazed surface may

While the glazed surface may pass leach tests

A fine grained secondary clay which fires to a light cream with 13% shrinkage at cone 10

Apply 1-2 coats with a brush or sponge

Iron chromate is a brownish powder that creates darker colors when added as a colorant to engobes

and freedom from efflorescence of any gypsum cement

Cobalt Oxide Designer Silkscreens While the glazed surface mayCobalt Oxide is a metallic coloring oxide that produces blue colors in glazes and is stable at all firing temperatures (unless in very high percentages where it will be black). Cobalt Oxide is the most powerful ceramic colorant and it appears in glaze recipes at 1% or less. Because cobalt oxide is not as finely powdered as cobalt carbonate, cobalt oxide is more likely to create blue specks in the glaze, a quality that we believe can be quite