| abstract |
The invention refers to a microfluidic process water analyzer (10) comprising an analyzer sample inlet (52), an optical sensor unit (40) for determination of an optical parameter of a liquid sample, a reagent tank (20; 201, 202, 203) being arranged fluidically upstream of the optical sensor unit (40) and comprising a liquid reagent (21), a waste tank (30; 301, 302, 303) arranged fluidically downstream of the optical sensor unit (40), an evaporation arrangement (32) comprising an evaporation chamber (33) arranged fluidically downstream of the optical sensor unit (40), the evaporation chamber (33) being actively vented with a drying gas pumped from a gas source (60) to the evaporation chamber (33). The evaporation arrangement allows to significantly reduce the volume of waste liquid. |