Instrumentation is described for the computation of stained paper electrophoresis patterns of serum proteins. The unit not only plots the dyed protein fractions, but with its electronic units, stores the individual integration voltages, scales the voltages to a percentage of the total, and plots the data on a bar graph. By including the total protein value obtained by chemical analysis, a second survey of the integrator voltages provides the concentrations of the protein fractions in grams per 100 ml. of serum.

In order to facilitate data processing in the clinical laboratory, a system was devised for colorimetric analysis in which the necessary calculations for hemoglobin measurement were performed automatically using analog and digital computer programs singly and combined. The technics described are essential steps toward an over-all system for obtaining, calculating, storing, and retrieving data in a clinical laboratory.