The concentrations are not serious and are typical of what you might find on a commercial body.
Glossary |
Efflorescence
A common problem with dry and fired ceramic. It is evident by the presence of a light or dark colored scum on the dry or fired surface. |
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Glossary |
Sulfates
Soluble sulfates in clay produce efflorescence, an unsightly scum that mars the fired surface of structural and functional ceramic products. |
Tests | Soluble Salts |