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Steel Blue Opalescent has the potential to deposit trace amounts of copper on the surface of the kilnshelf
000146) glasses to create dark interface (lead sulfide
This type of contamination is impermanent and may be burned out/fired out over the course of subsequent firings
even in small amounts
BE - 0113 White Opal Sheet Thickness:3mm Steel Blue Opalescent has theContains Lead May React With Selenium, Sulfer See the Bullseye Reactive Potential charts for more information Cold Characteristics Partly transparent. Slight dappling of color. Working Notes Opalizes upon firing. Slight dappling apparent in transmitted light. Fusible. Compatible with other Bullseye compatible glasses.