A sensor system that detects a current representative of a compound in a liquid mixture features a two-electrode strip adapted for releasable attachment to signal readout circuitry. The strip comprises an elongated support (preferably flat) adapted for releasable attachment to the readout circuitry;...http://www.google.com.au/patents/US5682884?utm_source=gb-gplus-sharePatent US5682884 - Strip electrode with screen printing
