An instrument suitable for viscosity determination of chick intestinal fluids

A rotating cylinder viscometer was described which was modeled after a Zimm viscometer. Regression of power input (watts) to the instrument versus angular velocity (radians per second) for standard fluids at fixed temperature produced linear equations with intercepts at the origin. The ratio of the slopes of these lines to the slope for water produced values that were good estimates of the relative viscosity of the standard fluids. The instrument was capable of determining the relative viscosity of .75 ml of intestinal fluid taken from young growing chicks.