Single-method Process Analyzers for monitoring chemicals in water and wastewater

202X Series – single-method Process Analyzers

Online wet chemical analysis has never been easier with the new compact 202X Process Analyzers.

High uptime, low chemical consumption, dependable 24/7 operation, and a user-friendly graphical interface make the 2026 and 2029 process analyzers attractive instruments for your online analyses. Metrohm Process Analytics instruments ensure reliable process monitoring and control day and night, saving you time and money.

We offer three versions:

2026 Titrolyzer: for titration or ISE measurements in up to 2 sample streams
2026 pH Analyzer: for pH measurements with automatic cleaning and calibration
2029 Process Photometer: for photometric measurements in up to 2 sample streams

Single-method process analyzers for wastewater and water monitoring for titration, pH, or ISE measurements as well as photometric measurements

The 202X Series Process Analyzers at a glance

Compact footprint for tight industrial spaces: 326x273 mm
Safe, rugged enclosure designed to IP66 specifications is ideal for process environments
Wide range of straightforward field-proven applications in several markets
Remote access and control via Ethernet and Modbus TCP/IP, with USB for data export
7” Full Color Touchscreen shows trend graphs and allows action modifications

Process monitoring: better value in a smaller footprint

Our 202X Series process analyzers can be set up to monitor a wide range of substances and parameters, easily and reliably. The analyzers come in three basic configurations which cover several industries and some of their most important process applications.

The 2026 Titrolyzer applies titration – a well-established absolute analytical method that does not need calibration.

The 2026 pH Analyzer is used for batchwise pH measurements in situations where inline pH measurements cause problems.

The 2029 Photometer, on the other hand, uses colorimetry and is capable of measurements in the low ppb range.

Single-method process analyzers for water and wastewater monitoring

2026 Titrolyzer

The 2026 Titrolyzer is used for titrations and ISE measurements.

Titration is an absolute analytical method, offering high selectivity through the use of dedicated electrodes and titrants, with no need for calibration. The titration method is suitable for a variety of proven standardized and regulated methods covering a huge number of wet chemical applications. The 2026 Titrolyzer can be your partner to secure the safety of your water sources and be an integral part of improving your process.

Several markets are a perfect fit for the 2026 Titrolyzer such as chemical, petrochemical, semiconductor, mining, steel/metal, and potable water.

> Learn more about the 2026 Titrolyzer

2026 Titrolyzer single-method process analyzer for titrimetric applications

Selected applications for the 2026 Titrolyzer:

acidic or alkaline solutions chloride hydrogen peroxide hardness	cyanide copper hydrogen fluoride and more

Applications in the spotlight:

Sulfuric acid

Sulfuric acid is determined by titrating with sodium hydroxide (NaOH). The detection is done with a Metrohm pH glass electrode. The analyzer is able to handle a wide range of acid concentrations, from mg/L to %.

Download the flyer

Solutions for online and laboratory analysis of polymers from Metrohm

Hydrochloric acid

Hydrochloric acid is determined by titrating with sodium hydroxide (NaOH), or alternatively with sodium carbonate (Na₂CO₃). The detection is performed with a Metrohm pH glass electrode. The analyzer is able to handle a wide range of acid concentrations, from mg/L to %.

Download the flyer

Analytical solutions for semiconductor production from Metrohm

Hydrogen peroxide

H₂O₂ is determined via potassium permanganate titration. The detection is performed with a Metrohm platinum electrode. The analyzer is able to handle a wide range of H₂O₂ concentrations, from mg/L to g/L.

Download the flyer

2026 pH Analyzer

The 2026 Titrolyzer configured for pH measurements is the perfect instrument for situations where inline pH measurements fail.

With the 2026 Titrolyzer, temperature, pressure changes, streaming potential effects and more have no influence on the measurement. The electrode condition is continuously monitored, and calibration and cleaning is done automatically. This results in less maintenance, longer lifetime of the pH electrode, and more reliable measurements.

Potential hazards and safety concerns regarding critical pipeline sample points are removed as the electrode does not need to be retracted for tasks like cleaning. You never have to worry about the membrane drying out since the electrode is always immersed in liquid.

> Learn more about the 2026 pH Analyzer

2029 Process Photometer

Based on proven laboratory methods, the 2029 Process Photometer can measure in the low ppb range.

The heart of the 2029 is its high performance thermostated LED photometer module capable of measuring the slightest color changes resulting in low detection limits. Such low detection limits are achieved using differential measurements to eliminate for example sample turbidity. The thermostatic cuvette removes temperature fluctuations that have a severe effect on the final result, providing you data you can count on.

The 2029 Process Photometer meets the needs and expectations of several branches like chemical, environmental, semiconductor, petrochemical, food and beverage, potable water, and energy/power.

> Learn more about the 2029 Process Photometer

2029 Photometer single-method process analyzer for colorimetric applications

Selected applications for the 2029 Process Photometer:

phosphate silica chlorine nickel zinc copper	chromium ammonia nitrate nitrite hardness and more

Applications in the spotlight:

Solutions for chemical analysis in power plants from Metrohm

Phosphate

Depending on the desired measurement range (μg/L to mg/L), o-PO₄ can be determined photometrically with the Vanadate-molybdate method (405 nm), or with the Molybdenum blue method (875 nm).

Download the flyer

Solutions for chemical analysis in industrial processes from Metrohm

Ammonia

Ammonia is determined photometrically based on the Berthelot method, measured at a wavelength of 650 nm. The analyzer is able to handle a wide range of ammonia concentrations, from μg/L to mg/L.

Download the flyer

Solutions for chemical analysis in the PCB and semiconductor industries from Metrohm

Copper (I & II)

Copper is determined photometrically based on the Bicinchoninate method, measured at a wavelength of 550 nm. The analyzer is able to handle a wide range of Cu(I & II) concentrations, from μg/L to mg/L.

Download the flyer

Products tailored to your requirements

Metrohm Applikon can engineer and supply virtually any "unit operation" for sample preconditioning and can provide a complete working solution for most industrial processes.

To help further automate your analysis, Metrohm Applikon manufactures sample preconditioning systems such as:

cooling/heating
pressure reduction
degassing
filtration
and much more

Custom projects can range from a single analyzer in combination with a simple sample panel to complete packages including multiple analyzers, shelters, piping, wiring, and interfacing. Shelters and other specialized protection solutions can be custom-built upon request.

Preconditioning setup for a single-method process analyzer

Downloads

8.000.5233

Brochure: 202X single-method Process Analyzers

(PDF 1.4 MB)

202X Series – single-method Process Analyzers

The 202X Series Process Analyzers at a glance