{HEAD ~ The concentrate} generally comprises {TAIL ~ an antimicrobial cationic compound} such as a quaternary ammonium compound, and a particulate suspending surfactant such as an amphoteric propionic acid salt 
comprises
{ HEAD ~ The concentrate } generally comprises { TAIL ~ an antimicrobial cationic compound } such as a quaternary ammonium compound , and a particulate suspending surfactant such as an amphoteric propionic acid salt
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH