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We are a Canadian company, based in Southern Alberta, serving the pottery industry since 1962.

Spectrum

Tea 500 Series Underglaze

Tea 500 Series Underglaze

Cone 06 to 6 underglaze, Brush on greenware or bisque, bare or under a clear glaze, 1 coat semi-transparent, 2 semi-opaque, 3 opaque, Dinnerware safe under a food-safe clear glaze, Lead-free, no cadmium, AP non-toxic, conforms to ASTM D-4236

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Spectrum builds the 500 series on a frit base instead of clay slip. That is why you can brush it on greenware or on bisque and fire it bare or under a clear glaze. Left bare it dries to a matte, velvet-like surface. Under a clear glaze the colour deepens. One coat is semi-transparent, two coats are semi-opaque and three are opaque. Spectrum rates it cone 06 to 6. It is dinnerware safe once a food-safe clear glaze is fired over it. Lead-free and AP non-toxic. Conforms to ASTM D-4236.