Abstract: A completely automated kinetic analyzer particularly suited for performing classical kinetic chemistries on an ultra-micro scale. The analyzer comprises a sample preparation unit and a photometric analytical unit. The preparation unit includes a rotationally indexed tray of sample containers presented in timed sequence to a diluter probe which effects dilution of the samples while transferring them sequentially to respective reaction cups, batches of which are contained in magazines and previously filled, by means of an automatic pipetter, with a first reagent. Conveyors move the magazines in stages through the preparation unit, the sample-reagent mixtures meanwhile undergoing preincubation. A second automatic pipetter thereafter adds a second reagent to each cup, in turn the contents of which are then mixed by an automatic stirrer.

Abstract: The nominally linear reaction rate and the curvature thereof are computed over an observation period by integrating the absorbance signal in opposite directions during portions of the observation period.