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Journal of Experimental Biology 48,207-215 (1968)
Published by Company of Biologists 1968

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

ANN M. CHASE ¹, D. M. UNWIN ¹, and R. H. J. BROWN ¹

¹ Department of Zoology, Downing Street, Cambridge

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.