The AlgaeLabAnalyser offers ...

• simultaneous determination of chlorophyll concentrations, photosynthetic activity of chlorophyll and transmission
• the detection of different algae classes via excitation using different coloured LEDs; calculation of biomass on green allgae, blue-green algae, brown algae (diatoms and dinoflagellates) and cryptophytes
• direct measurement without sample preparation via filtration, dilution or stirring etc.
• results of photosynthetic activity of the chorophyll usng different excitation patterns; the common fluorescence signals  are used via the Genty parameter method
• yellow substances (CDOM) measurement to correct the calculation of total chlorophyll
• integrated stirrer unit - no problems with sedimentation during long-term measurements

Measurements principle

The fluorescence of algae via excitation with visible light mainly depends on the chlorophyll-a, a pigment wide-spread in the plant world. The presence of other pigments is typical for different algae classes. The interaction of these different pigments systems with chlorophyll-a result in a special excitation spectrum for taxonomic algae classes.

The special patterns of this algal fluorescence - so-called fingerprints - are used in bbe fluorometers for the qualification of different algae classes. The light sources for the excitation are LEDs with selected wavelengths. The fingerprints of four algae classes and for yellow substances are pre-defined in the instrument. However, special user-specific fingerprints can also be defined.

The determination of algal activity (Genty parameter) is performed using an additional background light.