| http://www.w3.org/ns/prov#value | - At least the surfaces of the electrodes of FIGS. 1 and 2 that face the reaction zones 120 and 220 of sensor devices 100 and 200, respectively, are comprised of highly conductive metal, such as palladium, gold, platinum, silver, iridium, carbon, doped indium tin oxide, stainless steel and the like, or a combination of such materials.
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