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

Abstract

1. The principles involved in the design of an electrolytic respirometer are set out. 2. 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. 3. Provision is made for maintaining the temperature, pressure, and carbon dioxide and oxygen levels constant and at atmospheric values. 4. A new design of recorder displays the results directly as rate of oxygen consumption. 5. The features of the apparatus are discussed with reference to specific requirements.