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AlgaeGuard –Continuous Chlorophyll Measurement

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Distinction of green algae, blue-green algae (cyanobacteria), diatoms and crytophytes in a flow-through chamber – simple, quick and reliable
The AlgaeGuard is designed as a “plug and play” instrument, i.e. measurements are carried out automatically using pre-defined parameter settings immediately after boot-up or by pressing the start button on the touchscreen panel (right).
Continuous configuration by the operater is not necessary. Maintenance is as low as 1 hour per month.
Parameters can be changed using the external bbe PC software if necessary.

  • Technical Data 
  • Features 
  • Brochures
  • total chlorophyll [µg Chl-a/l]
  • concentration of green algae [µg Chl-a/l]
  • concentration of cyanobacteria [µg Chl-a/l]
  • concentration of diatoms [µg Chl-a/l]
  • concentration of cryptophytes [µg Chl-a/l]
  • yellow substances correction
Measuring range 0 – 200 µg Chl-a/l
Resolution 0.05 µg Chl-a/l
Weight 16 kg
Size (H x W x D) 420 x 500 x 200 mm
Mains supply 230 V /50 Hz or 110 V / 60 hz
Power input 30 W
Sample volume 30 ml
Temperature Sample: 0 – 35 °C / Environment: 0 – 40° C
Housing protection IP54
  • RS232
  • up to 16 4-20mA analogue and 16 digital outputs
  • SDI-12 with bbe converter
Maintenance interval 14 days


  • Uick, simple chlorophyll determination with algae class analysis
  • Direct measurement without sample preparation
  • Simple operation and virtually maintenance-free
  • Different communication ports, also in an industrial setting:
    • Up to 8 alarm outputs (potential-free contacts)
    • Up to 16 analog outputs (4-20mA)
    • Serial interface for data transfer
    • USB port for simple firmware updates
  • Integrated cleaning unit in measuring chamber prevents biofouling
  • Touchscreen display
  • PC operation with bbe AOA software


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