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