TOC Analyzers for Continuous Water Quality Monitoring

For TRUE TOC® Water Analysis

Process Insights offers industry-leading Total Organic Carbon (TOC) analyzers designed for accurate, reliable, and continuous water quality monitoring. Our online TOC analyzers provide real-time measurement of organic carbon in industrial process water, wastewater, ultrapure water, drinking water, and environmental applications.

Whether you need a water TOC analyzer for wastewater treatment, a process TOC analyzer for manufacturing, or an industrial TOC analyzer for demanding process environments, LAR’s combustion-based technology delivers exceptional accuracy with minimal maintenance.

Continuous Total Organic Carbon monitoring helps facilities improve process efficiency, reduce operating costs, optimize treatment systems, and maintain environmental compliance.

Why Measure Total Organic Carbon?

Total Organic Carbon (TOC) is one of the most important indicators of organic contamination in water. A TOC analyzer continuously measures carbon-based compounds that can affect product quality, process efficiency, equipment reliability, and environmental compliance.

Using an online water quality analyzer enables operators to:

Monitor organic contamination in real time
Improve wastewater treatment efficiency
Optimize chemical dosing
Detect process upsets immediately
Reduce laboratory testing
Protect water treatment equipment
Improve regulatory compliance
Lower operating costs

Why Choose LAR 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 TRUE TOC® water analyzers are 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.

TOC, COD, and BOD are three key measurements that help organizations ensure their wastewater is clean, meets environmental regulations, and protects rivers, lakes, wildlife, and drinking water.

Find the Right TOC Analyzer for Your Application

Whether you need an online TOC analyzer, industrial TOC analyzer, process TOC analyzer, or complete water quality monitoring solution, Process Insights can help you select the ideal system for your application.

Request a Quote | Contact an Expert

View Our Discontinued Water Analyzers

EXPLORE WATER ANALYSIS APPLICATIONS

BOD
COD
TN_b
TOC
Why Airports Monitor TOC, COD, and BOD
What is TRUE TOC Water Analysis?
Wastewater Treatment
Industrial Process Water
Environmental Monitoring
Surface Water Management
Pure Water & Ultra-Pure Water
Deicing Management

LAR Water Analysis Application Questionnaire_v24

Choosing an Online Water Analyzer for Liquid Process Streams

How to Monitor TOC, COD, and BOD in Industrial Wastewater

Best Practices for Monitoring TOC, COD, and BOD in Industrial Wastewater

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CHINA: info.cn@process-insights.com

SERVICE | TECHNICAL INQUIRIES ONLY

Applications for TOC Water Analyzers

LAR online TOC analyzers support water quality monitoring across numerous industries.

Industrial Wastewater

Monitor organic loading and optimize treatment performance.

Municipal Wastewater

Improve treatment efficiency while maintaining discharge compliance.

Drinking Water

Continuously monitor source water and finished water quality.

Ultrapure Water

Protect critical manufacturing processes in pharmaceutical and semiconductor facilities.

Process Water

Maintain product quality through continuous process monitoring.

Environmental Monitoring

Support regulatory reporting and environmental protection.

Industrial Manufacturing

Monitor cooling water, boiler water, condensate, and production wastewater.

Why Choose a LAR Online TOC Analyzer?

LAR TOC water analyzers use high-temperature catalytic combustion technology for complete oxidation of organic carbon, delivering accurate measurements across a wide concentration range.

Key Benefits

Continuous TOC monitoring with real-time results
High-temperature combustion technology
Minimal maintenance requirements
No hazardous chemicals required
Low operating costs
Reliable operation in harsh industrial environments
Fast response times
Suitable for clean water and high-contamination wastewater

LAR Total Organic Carbon Analyzer Portfolio

QuickTOCultra

A high-performance industrial TOC analyzer for demanding wastewater and process applications requiring robust continuous monitoring.

Ideal for:

Industrial wastewater
Chemical processing
Municipal treatment plants
Food and beverage production

QuickTOCeco

A versatile online TOC analyzer designed for routine industrial water quality monitoring with reliable, low-maintenance operation.

Best suited for:

Industrial process water
Environmental monitoring
Municipal facilities
Manufacturing plants

QuickTOCtrace

An ultra-sensitive water TOC analyzer designed for high-purity and ultrapure water applications.

Applications include:

Pharmaceutical water
Semiconductor manufacturing
Laboratory water systems
High-purity process water

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 gases, 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).

We offer 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 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.

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.