Spectrum Underglazes are all lead-free, dinnerware safe and A/P non-toxic when covered with a clear glaze.
Spectrum underglazes are graded for both 06/04 to 9/10 Some color variation can occur in the higher temperatures of cone 9/10 and This product is recommended Cone 06/04 and 5/6 for the most versatile options when applying to both bisque ware or greenware.
2-3 Coats recommended
