Water Quality System (WQS)
Field & Laboratory Meters
  • pH, SCT, DO & BOD, Multi-parameter Testing
Environmental Monitoring Systems (EMS)
Multi-parameter Water Quality Sondes
  • Sampling, Logging& Profiling

Integrated Systems & Services (ISS)
Environmental Monitoring Modules
  • Buoy& Floating Platforms, Profiling Systems, EcoMapper AUV

EMS_6 Series and EXO Water Quality Sondes

Blue-Green Algae Sensors


Blue-Green Algae Sensors
Phycocyanin and Phycoerythrin Sensors for Freshwater and Marine Applications

Interest in blue-green algae monitoring is growing due to the problems some species can present. Collect data on normal levels and be prepared for possible bloom events with YSI's freshwater 6131 Phycocyanin and marine 6132 Phycoerythrin Blue-Green Algae sensors.

Blue-green algae (cyanobacteria) can produce toxins and compounds that deteriorate drinking water quality. They may also represent the most abundant primary producer in ecosystem studies.
This sensor is available for use on the following sondes:

  • 600OMS V2
  • 6820 V2 & 6920 V2
  • 6600 V2 & 6600EDS V2
  • 600XL V2 & 600XLM V2

6131 Phycocyanin Specifications
Range: 0 to 280,000 cell/mL[1]
Detection Limit: 220 cells/mL[1]
Linearity: R2=0.9999[2], R2=0.9999[3]
Depth: 200 ft, 60 m

6132 Phycoerythrin Specifications
Range: 0 to 200,000 cell/mL[4]
Detection Limit: 450 cells/mL[4]
Linearity: R2=0.9999[5]
Depth: 200 ft, 60 m

YSI Blue-Green Algae sensors use in vivo fluorometry (IVF) for locating and measuring algae in real-time.

1. Estimated from cultures of Microcystis aeruginosa. 2. Relative to serial dilution of Rhodamine WT (0-400 ug/L). 3. Relative to serial dilution of Microcystis aeruginosa cultures (0-200,000 cells/mL). 4. Estimated from cultures of phycoerythrin-containing blue-green algae. 5. Relative to serial dilution of Rhodamine WT (0-8 ug/L)