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Polarograph is the device's name; quick, precise qualitative and quantitative chemical analysis is its purpose.

Professor Heyrovsky, who has been working with and refining the polarograph for a decade, declares it quicker, more sensitive, more accurate than any other method of analysis.

By means of a mirror galvanometer, the polarograph marks a chart when reactions occur.

By comparing the chart of an unknown substance with available polarograph records, the investigator soon solves his analysis problem.

Professor Heyrovsky & colleagues have prepared scores of polarograph charts.