BOD – Biochemical Oxygen Demand

LAR BioMonitor from LAR Germany is an online BOD analyzer for the determination of biochemical oxygen demand (BOD), respiration and toxicity in waste water. By using own activated sludge from plant, BioMonitor can accurately performing BOD measurement in short time and thus efficiently control their waste water treatment plant in an optimal way.

It not only measure BOD, but it simultaneously measures Activated Sludge Respiration (ASR) which is an important indication on the condition of plant’s biomass.

The patented measuring method of the LAR BioMonitor works just like a miniature treatment plant !!

LAR Biomonitor


  • Very fast measurement in less than 4 minutes
  • Measure both BOD and sludge activity
  • Use own activated sludge
  • Sample gets degraded without any extra dilution
  • Simultaneous measurement of the Activated Sludge Respiration (ASR)
  • Detect rapid BOD changes
  • Utilize maintenance-free filterless sample preparation
  • Good Correlation with Laboratory BOD5 Result (APHA 5210B)


  • Measurement range: 1-200.000 mg/l BOD, 0-100 % Toxicity, Respiration in mg O2/l x min
  • Response time: 3-4 minutes
  • High degradation
  • Using the plant’s own biomass
  • No memory effects


  • Environmental Protection
  • BOD Monitoring
  • WWTP Control

A I ANALYTICAL PTE LTD | Address 30, Kallang Place, #06-01, Singapore 339159 | Tel: +65 6459 0785 | Email: