A Simple Electrolytic Respirometer for the Continuous Recording of Oxygen Consumption Under Constant and Natural Conditions

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Abstract
The principles involved in the design of an electrolytic respirometer are set out. A respirometer is described for air-breathing animals which allows the continuous recording over long periods (up to two weeks) of oxygen consumption at rates of the order of 10-100 μl. per hour. Provision is made for maintaining the temperature, pressure, and carbon dioxide and oxygen levels constant and at atmospheric values. A new design of recorder displays the results directly as rate of oxygen consumption. The features of the apparatus are discussed with reference to specific requirements.