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 borax bead it slowly dissolves to a clear transparent glass, which is a beautiful green when cool.

From The Elements of Blowpipe Analysis by Getman, Frederick Hutton

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

From The Elements of Blowpipe Analysis by Getman, Frederick Hutton

In flame on platinum wire____ With borax bead.

From The Elements of Blowpipe Analysis by Getman, Frederick Hutton

A medium is a more subtle instrument than a balance or a borax bead, and see how long it is before you can get assured results with a borax bead!

From Love and Mr. Lewisham by Wells, H. G. (Herbert George)

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