Fluorescence probe FluoroProbe

automaticfor environmental analysis

The bbe FluoroProbe is a highly sensitive measuring instrument for the analysis of chlorophyll with algae class determination. Individual profiles during the measurements are taken for green algae, blue-green algae/cyanobacteria, diatoms/dinoflagellates and cryptophytes (others can be added e.g. Planktothrix rubescens) This enables the analysis of the occurrence and distribution of e.g. blue-green algae on site without the necessity of the laboratory. Possible interferences due to yellow substances are eliminated by an integrated CDOM correction factor. Chlorophyll in vivo measurement can be affected by particulate matter in the water body. Therefore a correction is essential when the turbidity is too high. The bbe FluoroProbe with the optional transmission sensor provides automatic turbidity correction using the latest bbe++ software extension. Turbidity correction with the FluoroProbe makes chlorophyll determination even more reliable. The bbe FluoroProbe can quickly and reliably determine the chlorophyll content of different algae classes down to a depth of 100m (optionally 200 m). The measurement data can be displayed in real time on a PC or be stored in the probe for subsequent evaluation. Measurement principle The fluorescence of algae (emission at approx. 700nm wavelength) due to excitation by visible light mainly depends on the presence of chlorophyll-a, a common pigment in the plant world. The occurrence of other pigments is typical for the different algae classes. Interactions between these different pigment systems with chlorophyll-a result in a special excitation spectrum for the taxonomical algae classes.