In one method of the present invention, {HEAD ~ at least some} of {TAIL ~ the measuring chambers} are arranged side by side, the first light beam and the second light beam being split for equal beams which are guided into the measuring chambers 
of
In one method of the present invention , { HEAD ~ at least some } of { TAIL ~ the measuring chambers } are arranged side by side , the first light beam and the second light beam being split for equal beams which are guided into the measuring chambers
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH