A new transducer concept for miniaturized amperometric sensor arrays i
s presented. A KCI-containing electrolyte for oxygen measurements is a
nchored inside the microcontainments of a silicon chip together with t
he working and reference electrodes. The fabrication process is planne
d as a full wafer process for low-cost mass production with a narrow v
ariability. First measurements are presented and the problems and adva
ntages of the containment concept discussed.