Abstract
A method, capable of determining very small flow rates, 0.01–0.10 μ1·sec−1, is described. The technique, which is devised with the aim of measuring the rate and fluctuation in the flow of uterine secretions, is based upon the detection of the asymmetry in the dispersion of heat, added as a label. The accuracy in measurement of basal secretion rates over long periods of time is ± 15%, the accuracy in the detecting of flow fluctuations is ± 5%.