The metallic probes are preferably not connected to a power source but rather react within {TAIL ~ the salt brine} to produce {HEAD ~ metallic ions} 
The metallic probes are preferably not connected to a power source but rather react within { TAIL ~ the salt brine } to produce { HEAD ~ metallic ions }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD