concept

A practical treatise on the use and application of chemical tests : with concise directions for analyzing metallic ores, earths, metals, soils, manures, and mineral waters / by Frederick Accum ; illustrated by experiments.

Tubes made by Drägerwerk A.G. for testing the presence of chemicals, arranged in a sphere. Colour lithograph.

Den Spuren auf der Spur : 100 Jahre Reagienzien garantierter Reinheit.

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Chemical tests and reagents

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A practical treatise on the use and application of chemical tests : with concise directions for analyzing metallic ores, earths, metals, soils, manures, and mineral waters / by Frederick Accum ; illustrated by experiments.

Tubes made by Drägerwerk A.G. for testing the presence of chemicals, arranged in a sphere. Colour lithograph.

Den Spuren auf der Spur : 100 Jahre Reagienzien garantierter Reinheit.