Porcelaine 150 Cloissone Outliners can be applied to all heat-stable objects that are able to withstand a temperature of 150°C (300°F), such as porcelain, china, glazed earthenware, terracotta, metal, enamelled sheet steel, copper and glass. This quality enables numerous effects to be produced and experiments to be made. Colors are transparent yet intense. Dishwasher safe.