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How do strontium aluminate glow in the dark pigments compare with sulphides?

April 26, 2017aluminate compare Dark glow Pigments strontium sulphides

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How do strontium aluminate glow in the dark pigments compare with sulphides?

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The old GID pigments were made with zinc sulphide. They degrade quickly, have short afterglows and sell for much less than aluminate GID’s. Today, zinc sulphide GID’s are used mainly for novelties.