For Spectrum Stains, frits, liquid ingredients and additives, click here. Can be used as a body stain in porcelain at high temperatures. Use only as body stain. Firing temperatures can only be a rough guide. The cycle, atmosphere, and rate of cooling will affect the colour.
Zinc oxide influences the colour in a glaze more than any other element.
Generally, zincless glazes should contain no magnesium oxide. Some colours containing zinc are to be used in a zincless glaze. The zinc in the colour is in a combined form and will not harm the colour, but free zinc oxide in the glaze can destroy the colour. Do not use zinc in glazes. Use with or without zinc.