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microcosmic salt
microcosmic salt
noun
- a white soluble solid obtained from human urine; ammonium sodium hydrogen phosphate. It is used as a flux in bead tests on metal oxides
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Word History and Origins
Origin of microcosmic salt1
First recorded in 1775–85
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Example Sentences
The oxide of niobium dissolved in a bead of microcosmic salt gives a bluish colour in the reducing flame.
From Project Gutenberg
Heat the substance with a bead of microcosmic salt or borax on a platinum wire in the oxidizing flame.
From Project Gutenberg
Many of the silicates give with borax a clear bead, while they form with microcosmic salt an opalescent one.
From Project Gutenberg
Fused with borax, soda, or microcosmic salt, they give a clear bead.
From Project Gutenberg
Baryta and its compounds produce the same reactions with microcosmic salt.
From Project Gutenberg
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