Skip to main content

TOC Water Analyzers

For TOC COD BOD Analysis

Fast, reliable TOC Water Analyzers 

Optimize your water quality control with Process Insights’ LAR™ TOC water analyzers – engineered for fast, accurate, and reliable measurement of TOC (Total Organic Carbon), COD (Chemical Oxygen Demand), and BOD (Biological Oxygen Demand). Whether you’re analyzing industrial wastewater, drinking water, or ultra-pure process water, our advanced analyzers deliver performance you can trust.

Why Choose Our TOC, COD, and BOD Water Analyzers?

Our online analyzers are purpose-built for high-performance water quality analysis in:

  • Municipal wastewater treatment
  • Industrial process water management
  • Environmental compliance monitoring
  • Pharmaceutical, chemical, and semiconductor manufacturing

Key Features of Our TOC Water Analyzers:

  • High-Temperature Combustion: Ensures complete oxidation of organic matter for precise TOC measurements.
  • Catalyst-Free Technology: Reduced maintenance and lower operational costs.
  • Wide Measurement Range: From trace-level purity to high-contamination samples.
  • Seamless Integration: Easy compatibility with existing systems for enhanced operational efficiency.
  • Regulatory Compliance: Designed to meet international standards, including EPA, DIN, and ISO guidelines.
  • Fast & Simple: No catalysts required, reducing costs and maintenance.
  • Broad Compatibility: Works with a wide range of organic compounds including pharmaceuticals and industrial pollutants.
  • High Sensitivity: Detects even trace amounts of contaminants.
  • Superior Accuracy: Complete oxidation means more precise TOC readings.
  • Easy Integration: Can be combined with other analytical tools for comprehensive water analysis.

Our Advanced TOC Water Analyzer Models

Explore a range of specialized LAR TOC water analyzer solutions tailored to meet diverse operational needs:

  • QuickTOCultra™: Built for even the most challenging wastewater applications, delivering unmatched accuracy at 1,200°C. This model offers TRUE TOC results for total carbon (TC), TOC, total inorganic carbon (TIC), and dissolved organic carbon (DOC).
  • QuickTOCeco™: Ideal for industrial water treatment plants, combining fast response times with the highest combustion temperatures.
  • QuickTOCtrace™ and QuickTOCpurity™: Designed for ultra-pure water monitoring with superior sensitivity and precision.

Catalyst-Free Thermal Oxidation Method 

Unlike conventional systems, our analyzers use a catalyst-free thermal oxidation method. This advanced technique provides high-speed, high-accuracy TOC measurement by oxidizing organic compounds at high temperatures without the need for added catalysts.

How Our Catalyst-Free Thermal Oxidation Technology Works

Our analyzers use a catalyst-free thermal oxidation method, delivering fast and precise TOC, COD, and BOD analysis without the operational drawbacks of traditional systems.  The process:

  • High-Temperature Combustion: Water samples are heated to 680–1200°C to fully oxidize organic contaminants.
  • CO₂ Detection: Oxidized carbon is measured via infrared detection or gas chromatography.
  • Accurate TOC Output: The measured CO₂ correlates directly with TOC levels, ensuring consistent, reproducible data.

Maintenance-free sampling system FlowSampler

The LAR FlowSampler is a patented sampling device from LAR which does not require filtration because the sample is siphoned off from the sample stream towards the main flow direction of the water. Therefore, no large particles can get into the sample stream. The smaller particles are collected because the unaltered sample then enters the system. The FlowSampler can handle even difficult challenges like the sampling at the inlet of a sewage treatment plant or before the course screening.

Technical Description

The sampling device FlowSampler requires a flow of 2-5 m³/h (max. 10 m³/h) and at a max. counter pressure of <0.2 bar at the sampling tube of the FlowSampler (Di = 3). The temperature of the sample should be less than 50 °C. For sample temperatures up to 90°C, a special PP version of the FlowSampler is available.

The connection of the FlowSampler can be realised as a PVC tube screwing of 32 mm (external) or as tube connection for a pressure hose with 30 mm internal diameter. For the sample drain the same dimensions are valid.

The sample dosing can be done by an immersion pump which may require a cutting device, depending on sample composition. The pump should guarantee the necessary flow of 2-5 m³/h (max. 10 m³/h) over the bridged distance.

The FlowSampler from LAR is installed next to the analytical device (i.e. at the wall).

 

Certified housings for special conditions

Often, online analyzers are installed in industrial facilities such as refineries or chemical plants. Here explosive gasses, vapors or mist can be present. It is a high-risk situation, as any spark or any heat source may cause an explosion. Normally analyzers are located directly at the process site, being built into an analyzer shelter with climate control (HVAC; heating, ventilation and air conditioning).

LAR offers a wide range of analyzers with tailor made protection housings in accordance to international standards (IEC 60079-14:2007) and regulations (DIN EN 60079-2:2011-11). These stand-alone analyzers do not necessarily require air-conditioned shelters as their enclosures correspond to requirements of Nema 4X (IP 65) and ATEX for Zone 1 and 2 (T3, T4). The Ex housings are made specifically for the use within hazardous, potentially explosive and the NEMA 4X housings for corrosive environments.

The Ex zone classification depends on the type of flammable substances e.g. gas, vapour, mist or a cloud of combustible dust and the probability that they can be present.

  • Ex zone 0: Gas, vapor or mist are present continuously or for long periods or frequently.
  • Ex zone 1: Gas, vapor or mist is likely to occur in normal operation occasionally.
  • Ex zone 2: Gas, vapor or mist is not likely to occur in normal operation, but – if it does occur – will persist for a short period only.

Safe. Reliable. Proven.

LAR delivers trusted solutions for online water analysis—even in the most hazardous and corrosive environments. With our Ex p protected analyzers, operators gain safe, robust, and compliant monitoring directly in Ex zones.

🌍 Hundreds of LAR analyzers equipped with pressurized enclosures (Ex p) are operating successfully across the globe, providing optimal performance and safety for critical industrial processes.

Engineered for safety. Designed for harsh conditions. Built for performance.

Mobile Measurement Solutions – Flexible, Fast & On-Site

For special applications, LAR offers a limited number of mobile water analyzers that are available for use both domestically and internationally. These compact units are designed for easy deployment—all you need is a power supply, parking space, and access to the sample stream or liquid source.

Our Mobile Analyzers Are Ideal For:

Short-Term Rentals – For temporary monitoring or testing needs

Project Planning – Mobile measurements to support investment decisions or conduct comparative tests

Product Demonstrations – Experience different analyzers in action

Live Demonstrations & Training – On-site, real-time training under hygienic conditions

Why Choose Mobile Measurements from LAR?

  • No fixed installation required
  • Quick setup and immediate results
  • Perfect for pilot testing, field studies, or decision-making support
  • Ensures hands-on experience with LAR’s technology in your own environment

Contact us today to plan your mobile measurement project with our expert team. We’re here to help you choose the right solution—on-site and on time.


Reliable TOC COD BOD & Water Analyzers for Every Industry

QuickTOCultra™ TOC Water Analyzer

LAR™ online TOC water analyzer for harsh wastewater
LAR QUICK TOC ULTRA WATER ANALYZER

QuickTONultra™ TN Water Analyzer

LAR™ online nitrogen bound water analyze for harsh water environments
LAR QUICK TON ULTRA WATER ANALYZERS

QuickCODultra™ COD Water Analyzer

LAR™ online water analyzer for chemical oxygen demand (COD) of water samples
LAR QUICK COD ULTRA WATER ANALYZERS

QuickTOCairport™ Run-Off Water Analyzer

LAR™ online water analyzer for TOC COD for airport applications
LAR QUICK TOC FOR AIRPORT APPLICATIONS

QuickTOCeco™ TOC Water Analyzer

LAR™ industrial & municipal applications for continuous monitoring TOC
Process Insights_LLAR QuickTOCeco

QuickTOCuv™ TOC Water Analyzer

LAR™ online TOC water analyze for harsh water environments
Process Insights_LAR QuickTOCuvII water analyzer

QuickTOCpurity™ TOC Pure Water Analyzer

LAR™ online TOC water analyze for TC, TIC TOC & DOC in pure water
Process Insights_LAR QuickTOCpurity pure water analyzer

QuickTOCtrace™ TOC Water Analyzer

LAR™ online TOC water analyze for lowest measuring ranges (UPW)
Process Inishgts_LAR QuickTOCtrace for ultra-pure water analysis

QuickCODlab™ COD Lab Water Analyzer

LAR™ online COD water analyzer for laboratories
Process Inisights_LAR QuickCODlab water analyzer for laboratories

BioMonitor™ Toximeter

LAR™ online water analyzers monitoring organic and inorganic compounds BOD
Process Insights_LAR_BioMonitor_wwt water analyzer

Nitritox™ Toximeter

LAR™ online water analyzer for measuring toxicity in water
Process Insights_LAR_Toximeter NitriTox

ToxAlarm™ Toximeter

LAR™ toxicity analyzer continually monitors drinking water, surface and ground water for pollutants and contaminants.
Process Insights_LAR_ToxAlarm

our brands

Cavity Ring-Down Spectroscopy & Mid-Infrared QCL Technology for Ultra-High Purity Gas Analysis

TIGER OPTICS™

Dew Point Chilled Mirror Hygrometry Technology for Humidity and Temperature Monitoring

MBW CALIBRATION™

Excimer UV Fluorescence Technology for Total Sulfur – Total Nitrogen Analysis

ATOM INSTRUMENT™

FTIR FT-NIR Spectroscopy Technology

ANALECT®

Aluminum Oxide Dew Point Moisture Sensing Technology

COSA XENTAUR™

Quadrupole Industrial & Lab Mass Spectrometry Technology

EXTREL™

Fixed Magnetic Sector Mass Spectrometry Technology

MGA™

Near Infrared and UV-VIS Optical Absorption Spectroscopy Technology

GUIDED WAVE™

High Temperature Method TOC COD BOD Water Analysis Technology

LAR The TOC Leader™

Injection Style or Direct BTU Wobbe CARI Calorimetry Technology

COSA XENTAUR™ Calorimeters

Trace and Percent Oxygen Monitoring Technology

ALPHA OMEGA INSTRUMENTS™

To Top