NOVELTY - A catalyst screening system has an electrolytic cell having a counter electrode comprising segmented anodes; a circuit comprising resistors connected to segmented anodes; and voltmeter or data acquisition mechanism for measuring voltage across each resistor to calculate current which is an indication of effectiveness of each discrete catalyst.    USE - For screening and measuring the effectiveness of catalysts used in electrochemical applications, such as energy consuming cells, energy producing cells, e.g. fuel cells used in vehicles.    ADVANTAGE - The system provides not only more efficient and economic screening of catalytic materials, but the data generated will be more predictable in terms of future performance in cell environments, and thus, more reliable.    DETAILED DESCRIPTION - A catalyst screening system comprises an electrolytic cell (30), a circuit, and voltmeter or data acquisition mechanism. The electrolytic cell has a counter electrode (22a-j) comprising segmented anodes. Each anode is electrically isolated from each other. A catalyst support holds associated cathodes. Each cathode is operatively arranged to function as a working electrode when a discrete catalyst is deposited on the catalyst support. The catalyst support is positioned between the counter electrode and the working electrodes. The circuit comprises resistors connected in parallel, where each resistor in the circuit is connected to one segmented anodes. The voltmeter or data acquisition mechanism measures voltage across each resistor to calculate current, where current is an indication of effectiveness of each discrete catalyst.    An INDEPENDENT CLAIM is also included for a method of simultaneously identifying the activity of catalytic materials.    DESCRIPTION OF DRAWING(S) - The figure is a side view of the inventive apparatus and of the associated electrical circuit and computer.    Current carrier (12)    Counter electrode (22a-j)    Computer (25)    Electrolytic cell (30)