ZO Paint

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Most crucibles for melting platinum are made of fused silica or quartz. Because of the high temperatures involved, chemicals from the crucible leach into the molten platinum. Weak areas are created in the platinum, which results in brittle, porous casting.

ZO Paint is a calcia-stabilized zirconium oxide (ZrO2) paint which shields the platinum from harmful chemicals.

ZO Paint eliminates contamination problems. Best applied in several thin coats with an airbrush (see "Related Products" below). Quick to dry. Because it allows you to use the same crucible for more melts without worrying about contamination, you get the most out of each crucible - and that saves you money.
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