AlgaeTorch
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Fast and simple algae monitoring The handy measurement instrument for rapid deployment Designed for all types of surface water: lakes, reservoirs, rivers and bathing water

The excitation of the photosynthesis apparatus in the living cell using light of little intensity leads to the emission of fluorescent light (in vivo fluorescence). The AlgaeTorch determines the algal content via measurement of the fluorescence intensity: this is proportional to the chlorophyll content of the microalgae and blue-green algae. The results appear in real time, since the pulsed fluorescence excitation and emission occurs in milliseconds. The fluorescence measurement corresponds to time-consuming wet chemical analysis according to ISO 10260 and DIN 38412/16. However, in contrast...

FEATURES ▶▶ integrated display ▶▶ sensor keys ▶▶ vibration signal ▶▶ internal power supply ▶▶ robust design ▶▶ cable-free measurement Exported measurement data can be integrated graphically into Google Earth or Google Maps. All settings and measurement results are shown on the integrated display. The brightness of the display can be regulated and produces good readability even in strong sunlight. Neither a control unit nor a PC is needed for a measurement. The AlgaeTorch is operated by easy-to-use sensor keys. Inputs and the end of a measurement are confirmed by a vibration signal. The...

Software, Calibration and Function Testing Background: spectral analysis FEATURES ▶▶ pigment and chlorophyll fluorescence In addition to chlorophyll, algae contain characteristic pigments to collect energy. All algae show in common chlorophyll-fluorescence with an emission of red light between 680 and 700 nm. The excitation wavelengths, however, can be considerably different according to each algal class. ▶▶ LED wavelengths ▶▶ chlorophyll measurement of different algae This characteristic of algae is used to classify the different algae. The AlgaeTorch uses 2 x 3 LEDs at different...

Technical Details of the AlgaeTorch ADVANTAGES ▶▶ immediate chlorophyll analysis ▶▶ differentiated blue-green algae detection blue-green algae [µg chl –a/l], total chlorophyll [µg chl –a/l], turbidity, GPS coordinates Measurement range ▶▶ automatic turbidity correction Power supply ▶▶ long operation times, little maintenance Sample temperature Turbidity correction Protection class Data interface Data interface ▶▶ simple operation ▶▶ cable-free measurement ▶▶ light, portable and mobile ▶▶ submersible to 10 m, maximum 100 m bbe++ software for Windows ▶▶ online option ▶▶ switchable from µg...