THE MEASUREMENT OF GASEOUS OXYGEN TENSION UTILIZING PARAMAGNETISM: AN EVALUATION OF THE “SERVOMEX” OA.150 ANALYZER

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Abstract
Paramagnetism is described and discussed in relation to the measurement of oxygen tension in gases. In medical practice the need for a comparatively cheap instrument which will accurately measure the oxygen concentration in gas mixtures has been felt by both clinical and laboratory workers. The Servomex OA.150 paramagnetic oxygen analyzer has been assessed and found to possess features which make it suitable for the analysis of gas samples of not less than 50 mL For greater accuracy a four- or even five-figure read-out is recommended in order to utilize the basic sensitivity of this instrument. Some problems concerning its use for long-term monitoring are discussed.

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