COD – Chemical Oxygen Demand

Online Reagent Free COD Analyzer for handling High Salts, Fatty and High Particles Sample

LAR QuickCODultra Analyser is the most reliable measurement system for the roughest waste water applications. Due to high temperature combustion at 1200 deg C, this model is excellent in handling sample content, high salt, fatty and high particle samples.

Almost all type of sample can be measured accurately by this unit.

The high combustion method goes without any use of dangerous and etching substances so that a high operational safety is ensured.

The measurement results are taken from the complete digestion which is free from chloride interference.

LAR QuickCODultra Analyser


  • Complete oxidation without the use of catalysts and filtration enables the measurement of real COD.
  • Catalyst-free
  • High salt concentrations possible, up to 30% NaCl
  • No memory effects
  • Reliable measurement without reagents
  • Self explanation software
  • Autostart function
  • Good Correlation with Laboratory COD Result (APHA 5220)


  • Influent and Effluent water
  • Discharge control
  • Industrial waste water
  • Process Water
  • Sea water
  • High Salts Content Sample

Technical Specifications

Measuring PrincipleHigh Temperature Combustion at 1200 deg C without Catalyst and Measure Oxygen (O2 ) Consumes with Zirconium Oxygen (O2) Detector
Measuring ParameterChemical Oxygen Demand [COD]
Measuring Range100 ~ 2,000 mg/L (ppm) as O2
500 ~ 8,000 mg/L (ppm) as O2
1000 ~ 15,000 mg/L (ppm) as O2
5,000 ~30,000 mg/L (ppm) as O2
20,000 ~ 250,000 mg/L (ppm) as O2
Accuracy and Reproducibility+/- 2%
Analyser SamplingUnique Robotic Arm Injection System to handle Rough and Dirty Sample
DisplayHigh res. 10.4-inch backlit LCD touch screen
Standard FeaturesAuto Start Function, Self Explanatory Software
Outputs0/4 – 20mA for Individual Measuring Stream
8 x Dry Contact Relays
USB 2.0
Analysis StartProgrammable Time Interval
External Digital Signal [Remote Start]
Standard FeaturesAuto Start Function
Self Explanatory Software
Power Supply
[Power Consumption]
100VAC or 230VAC, 50/60 Hz,
[Max: 1.2 kW | Average: 750 Watts]
Standard Enclosure [Dimension]Splash Proof Steel Housing (IP54), Powder Coated
[1 Sample Stream: 600 x 1,062 x 608 mm (W x H x D)]
[2 – 6 Sample Streams: 820 x 1,062 x 608 mm (W x H x D)]
Additional OptionUpgrade to 6 Streams in 1 Analyser
Upgrade with TC*, TIC**, TOC*** and/or TNb**** Measurement in 1 Analyser
Upgrade with High Salts Option
Upgrade with Dilution Option (Stream 1 only)
Upgrade with Remote Access via TCP/IP
Upgrade with ProfiBus DP Functionality
Upgrade with Profinet Functionality
Upgrade with Modbus Functionality
Enclosure OptionIP65 (NEMA 4X) Stainless Steel Enclosure
Ex Proof Purge Stainless Steel Enclosure for ATEX or IECex Area
Note* Total Carbon, ** Total Inorganic Carbon, *** Total Organic Carbon, **** Total Nitrogen Bound

Option with Ex-Proof Purge Enclosure for Install Unit in ATEX or IECex Area

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