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J Appl Physiol 20: 785-786, 1965;
8750-7587/65 $5.00
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Nomogram for temperature correction or electrode calibration during Po2 measurements

J. Hedley-Whyte 1, E. P. Radford JR. 1, and M. B. Laver 1

1 Anaesthesia Laboratory of Harvard Medical School at Massachusetts General Hospital, and Department of Physiology, Harvard School of Public Health, Boston, Massachusetts

A nomogram has been constructed based on temperature correction factors needed when the O2 tension of an aqueous solution is measured after warming or cooling the solution in a sealed container. Since blood has a constant solubility relative to water at O2 tensions above 200 torr, this nomogram is suitable for use when measuring the O2 tensions of fully saturated blood. This nomogram may also be applied to calibrate an O2 electrode by a technique which avoids the need for special calibrating gases.

relative solubility; O2 electrode; hypothermia; tonometry; Bunsen coefficients; hyperbaric oxygenation

Submitted on October 12, 1964






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