The chlorophyll measuring instrument with algae class differentiation
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.
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 1000 m). The measurement data can be displayed in real time on a PC or be stored in the probe for subsequent evaluation.
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.
The special patterns of this algae fluorescence - so-called fingerprints - are used in the bbe fluorometers for the quantification of different algae classes. The excitation light sources are LEDs with different wavelengths. The fingerprints of four algae classes and of yellow substances are already stored in the FluoroProbe. Special user-defined fingerprints can also be added
Advantages of the FluoroProbe
determination of green algae, blue-green algae (cyanobacteria), diatoms and cryptophytes
up to 4 other algae classes can be calibrated by the user
up to 4 measurements per second
yellow substances correction and compensation of interferences by UV-LED
reduces the number of required microscopic laboratory examinations
internal rechargeable batteries
PC software for data analysis
options: pressure sensor, transmission measurement
|Chlorophyll||0 - 500 µg chl-a/l|
|Resolution||0.01 µg chl-a/l|
|Transmission||0 - 100%|
|Temperature||Sample: -2 - 40°C / Environment: -2 - 40°C|
|Housing material||reinforced carbon fibre/V4A steel|
|Weight||6.4 kg (7.2 kg with lightshield)|
|Dimensions (H x D)||450 x 140 mm|
|Battery capacity||3900 mA h|
|Operating time||continuously up to 10 h; interval up to 30 days|
|Memory capacity||2 GB memory card, 10 million datasets|
|Maximal diving depth|