A Modification of the Method of Riley, Proemmel and Franke for Determination of Oxygen and Carbon Dioxide Tensions in Blood

Abstract
Several modifications of the original technique are described. The accuracy of the method is then assessed by comparison of results with those obtained with a conventional tonometer technique. The standard deviation of the means of duplicate analyses for pO2 is [plus or minus] 2.05 mm Hg, while for pCO2 the standard deviation is [plus or minus] 3.3 mm Hg. New empirical correction factors are presented. Major factors affecting the accuracy and reproducibility of the method are discussed.