Preferred triggering events include {HEAD ~ light} of a suitable wavelength and {TAIL ~ intensity} to activate the microorganism neutralizer or a pH sufficient to activate the microorganism neutralizer 
of
Preferred triggering events include { HEAD ~ light } of a suitable wavelength and { TAIL ~ intensity } to activate the microorganism neutralizer or a pH sufficient to activate the microorganism neutralizer
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH