borax bead

American  

noun

Chemistry.

1. a bead of fused borax, used in chemical analysis for the identification of certain metal oxides.

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Example Sentences

In flame on platinum wire____ With borax bead on platinum wire.

From The Elements of Blowpipe Analysis by Getman, Frederick Hutton

This globule may be examined for iron, cobalt, and nickel with the borax bead.

From The Elements of Blowpipe Analysis by Getman, Frederick Hutton

When heated on the borax bead it gives an equally beautiful green, which is, however, rather more inclined to chrome than emerald.

From The Chemistry, Properties and Tests of Precious Stones by Mastin, John

Microcosmic Salt dissolves oxide of copper in the flame of oxidation to a green bead, not so intensely colored as the borax bead.

From A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations by Anonymous

This powder should then be fused in the oxidation flame until it mixes with, and is thoroughly dissolved by the borax bead.

From A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations by Anonymous