{HEAD ~ A cuvette} has been used to exemplify one embodiment of {TAIL ~ the invention} involving a flow through system 
{ HEAD ~ A cuvette } has been used to exemplify one embodiment of { TAIL ~ the invention } involving a flow through system
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH