Author： DUNKLE R. L. STRONG F. E.
Publisher： Entomological Society of America
ISSN： 1938-2901
Source： Annals of the Entomological Society of America, Vol.65, Iss.3, 1972-05, pp. : 705-710
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Abstract
A digital electrolytic microrespirometer capable of measuring 0.01 liter of consumed oxygen is described. The device, a coulometric manometer, works on the principle that as oxygen is consumed, the resulting negative pressure draws an electrolytic solution into contact with a platinum electrode. This initiates current flow, and oxygen is generated by electrolysis. A solid-state electronic circuit is employed to measure current flow, which is translated into liters of oxygen on a digital counter. Calibration is accomplished both electronically and mechanically. This device is suitable for respiration studies of individual mites, Collembola, or single organisms weighing only 10 g.
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