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How does one test for lead in pottery glazes?
A solution is poured in the pottery, allowed to sit and then tested for any leached lead. In general, ceramic pieces that have a well-matured glassy appearance that is smooth and hard glossy looking are probably fired at high enough temperatures that the lead is stable. If the glaze is more of a matt finish, it could still be safe if fired at a high temperature. A kit for $29.99 is available to test for lead in pottery glazes. The FRANDON Lead Alert Kit - order from: Frandon Enterprises, Inc. Post Office Box300321 Seattle, Washington 98103 1-800-359-9000 PREPARED BY: Angela M. Fraser, Ph.D., Associate Professor/Food Safety Specialist, and Carolyn J. Lackey, Ph.D., R.D., L.D.N., Professor/Food and Nutrition Specialist, North Carolina State University (August 2004)