the photometer you can determine the concentration of impurities (e.g.
methylene blue) in water. When the polluted water flows through the
activated carbon the impurities get partly adsorbed (depending on the
flow rate). With the software you can plot the time curve of the
absorbance of the photometer light at a given wavelength, export the
values to Excel and calculate the concentration of the impurities there.
A driver and a LabVIEW library were developed in order to make the photometer accessible in LabVIEW.