BOD – Biochemical Oxygen Demand

LAR BioMonitor from LAR Germany is an online Respirometers 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.

LAR BioMonitor

Measuring Principle: Continuous 2 Stream Respiration Measurement

  • Measurement Range: BOD: 1 – 200,000ppm ASR: 0 – 5 ppm/min
  • Response Time: Minimum: 3-4 Minutes depend on application


  • Very Fast Measurement in less than 4 Minutes
  • Measure Both Biological Oxygen Demand (BOD) and Sludge Activity Respiration (ASR)
  • Use Plant Own Activated Sludge (Biomass)
  • Sample gets degraded without any extra dilution
  • Detect Rapid BOD Changes
  • Utilize Maintenance Free Filter less sample preparation with LAR FlowSampler
  • Good Correlation with Laboratory BOD5 Result (APHA 5210B)


  • Environmental Protection
  • BOD Monitoring
  • WWTP Control
A I ANALYTICAL PTE LTD | Address 30, Kallang Place, #06-01, Singapore 339159 | Tel: +65 6459 0785 | Email: