News Published: 25 November 1939 The Polarograph Nature 144, 904–905 (1939) Cite this article ...

SKERMAN1, using a recording polarograph, reported that an actively growing culture of Pseudomonas was saturated with oxygen, only when the broth was agitated by a stirrer revolving at 500 r.p.m ...

The recent development of the polarograph 1–3 has made it possible to obtain direct arterial-oxygen-tension determinations with ease and simplicity at all concentrations of inspired oxygen.

Polarograph is the device’s name; quick, precise qualitative and quantitative chemical analysis is its purpose. It can tell the nature and constituents of a substance in from three to five minutes.