Metrohm AG

- Model ADI 204Y - Multifunctional Process Analyzers



Ion chromatography (IC) allows for multicomponent analysis in a single measurement. IC offers many advantages for process monitoring with several detectors, analytical columns, and sample preparation options available from Metrohm. The Process Ion Chromatograph from Metrohm Process Analytics is a complete and flexible system for online monitoring of ionic compounds in aqueous media from ng/L to % concentrations. This online process analyzer is offered in two setups with multiple time-saving options, and can be configured to measure several sample streams for easy process monitoring around your plant.

The 204Y series stands for robust and advanced Process Analyzers.

Based on 40 years of process experience the 204Y series is capable of tackling any challenging application using titration, Karl Fischer titration, ISE, colorimetry, voltammetry, and CVS techniques. If required, we will design and deliver sample preconditioning systems to optimize the sample delivery and preparation to guarantee a successful installation.

  • High throughput and flexibility thanks to multiparameter measurements and techniques
  • High uptimes and dependability for uninterrupted monitoring 24/7
  • Sample preconditioning systems to optimize all challenging sample and process conditions

  • Modular design for maximum flexibility and adaptation to your process requirements 
  • IP66/NEMA4-rated with Ex proof series suitable for hazardous Zone 1 and 2 areas 
  • Easy operation with Touch Screen and remote control from any location 
  • Dedicated VA version for trace metal analysis and for organic additives with CVS


Metrohm Process Analytics ADI 204Y analyzers unite the robustness and reliability required for process monitoring with the precision and accuracy of an analytical lab.

Thus, you will benefit from a system that can be operated in harsh environments and from very precise, reliable results.


Each analyzer is set up according to the user’s specific requirements using modular parts and modules that are needed for the analysis to be carried out.

This flexible layout also allows for a combination of several analysis modules for multiparameter measurements on multiple streams.


We can supply an analyzer that is specifically tailored to your process needs.

In addition to the analyzer, we can engineer and provide virtually any sample preconditioning system, such as cooling or heating, pressure reduction and degassing, filtration, and many more.

This allows you to implement the specific analytical tool you require. Your analyses will therefore be consistent and deliver results you can trust.


The ADI 204Y family of analyzers apply a variety of methods to ensure reliable and reproducible results for process control.

The ADI 2045TI Process Analyzer (for online analysis) and the ADI 2045PL (for atline analysis) are capable of performing titration, dynamic standard addition, differential absorbance colorimetry, and direct measurements (e.g., pH, conductivity, and temperature). This combination and analysis flexibility allows you to analyze several parameters simultaneously and meet most online analytical needs.

If, however, you need to analyze trace levels of metals or monitor plating baths (e.g., for brightener, leveler, or suppressor determination), then the ADI 2045VA Voltammeter is for you. This online analyzer can measure a variety of metal ions and is therefore suitable for a variety of industries and areas, such as mining and water quality control.


In hazardous environments, where concentrations of flammable gases, vapors, or dust occur, it is vital that instruments be safe to operate and do not initiate an explosion.

The Ex proof version of the ADI 2045TI affords you this safety and protection in accordance with EU Directive 94/9/EC (ATEX95) and is certified for Zones I and II. However, high safety does not necessarily mean high maintenance in regard to time-consuming permit approvals and procedures: this analyzer is designed in such a way that the need for “hot work permits” is eliminated when conducting routine maintenance.

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