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Looking for a titrator?
Are you looking for the right titrator for your requirements?
- Find the right titrator here
OMNIS
New titration system for the modern laboratory: faster analysis, safer chemical handling, new software, more automation.
Titrando
High-end potentiometric titrator that meets any requirements: flexible, compliant, customizable, and automatable
Ti-Touch
Compact, easy-to-use potentiometric titrator for a wide range of routine titrations
Titrino plus
Entry-level, versatile potentiometric titrator for basic applications
Titrotherm
Thermometric titrator for fast determinations if potentiometric titration cannot be applied
Looking for a KF titrator?
Are you looking for the right KF titrator for your requirements?
- Find the right KF titrator here
OMNIS KF
New volumetric Karl Fischer titrator for safe, easy, and fast water content determination
KF Titrando
High-end titrators for determining any water content from 0.001 to 100%
KF Ti-Touch
Compact, stand-alone volumetric (> 0.1% water) or coulometric (down to 0.001% water) titrator with integrated touch-screen control unit
KF Titrino plus
Entry-level titrator for coulometric (water content: 0.001 to 1%) or volumetric (up to 100%) water determination
Titrino Coulometer
Basic coulometer for determining low water contents (down to 0.001%)
Gas Analyzer
All-inclusive system for water determination in liquefied and permanent gases
- Get to know the Gas Analyzer
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Find the right IC system for your requirements here.
- Go to the IC system overview
940 Professional IC Vario
High-end ion chromatography system for research applications and method development
930 Compact IC Flex
Compact ion chromatography system for routine analysis
Eco IC
Entry-level ion chromatograph for water analysis and utilization as a training tool.
Hyphenated techniques

Columns

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912/913/914 pH/Conductometer
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780/781 pH/Ion meter
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867/856 Modules
High-end modules for customized pH, ion, and conductivity measurement
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Handheld spectrometer for quick and easy identification of unknown substances
- Get to know the Raman handheld analyzers
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Professional VA Instruments
Advanced VA systems with high-performance viva software for determining traces of heavy metals with polarography and voltammetry with high sensitivity
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Portable voltammetric analyzer for the determination of trace levels of arsenic, mercury, and copper in water
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Process VA
Overview of our CVS solutions
Learn more about our solutions for CVS.
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Professional CVS Instruments
Advanced CVS system with dedicated high-performance software for brightener, suppressor, and leveler determination in the electroplating industry
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202X Series – single-method Process Analyzers
Single-method process analyzers for water and wastewater monitoring with titration, pH, ISE, or photometry methods.
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Process Ion Chromatograph
Taking high-precision Metrohm ion chromatography to an even higher level of autonomy, the Process IC can connect up to 20 sample streams and provide reliable multicomponent results for superior process control.
2035 Process Analyzers
Process analyzers available as potentiometric, photometric, and thermometric versions and optional additional pH and conductivity measurement
- Get to know the 2035 Analyzers
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ADI 204Y – Multifunctional Process Analyzers
Multifunctional process analyzers tailored to your requirements for multiparameter measurements and streams
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Precalibrated and preprogrammed single-parameter analyzers
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NIRS XDS Process Analyzers
Multi-channel analyzer for nondestructive real-time spectroscopic analysis
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Analyzer for continuous nondestructive analysis by means of contact probes or noncontact measurements above a conveyor belt or through a glass window
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Fully autonomous system monitoring ions in aerosols and gases in ambient air
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Overview of Electrochemistry
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Compact Line
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Compact, PC-controlled portable potentiostat for education and basic applications
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Integrated solution for combined electrochemical and spectroscopic analysis.
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Electrochemistry electrodes
Software
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Stability measurement overview
Learn more about our solutions for stability measurement.
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Rancimat
Instrument for determining the oxidation stability of natural oils and fats
Biodiesel Rancimat
Instrument for determining the oxidation stability of biodiesel and biodiesel blends
PVC Thermomat
Instrument for determining the thermostability of PVC
Liquid Handling Overview
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Eco Dosimat
Modern liquid handling system for Swiss-made precision and accuracy at an affordable price.
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846 Dosing Interface
Liquid handling instrument for standalone use or integration into existing Metrohm systems
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Dosimat plus
Manually controlled, high-precision instrument for all liquid handling tasks
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Metrohm offers a comprehensive portfolio of separation, preconcentration, and other columns for ion chromatography

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OMNIS KF – Safe, easy, and fast Karl Fischer titration
Karl Fischer titration has never been better:
- Safe handling of reagents,
- Easier titration through automatic titration start
- Time savings through automated procedures
Discover OMNIS KF

Reinventing volumetric Karl Fischer titration: OMNIS KF!

KF Titrino Coulometer

The 831 Coulometer has gained a reputation for dependability and accuracy.

This inexpensive, time-tested coulometric titrator allows you to analyze samples with low water contents (0.001 to 1%) in an easy and convenient manner.

Key features

Practical and safe: automatic reagent exchange with Dosino
Versatile: stand-alone or software-controlled
Adaptable: automated sample preparation possible

Titrino Coulometer systems (2)

831 KF Coulometer with generator electrode with diaphragm

2.831.0010

Inexpensive coulometer including titration cell and generator electrode with diaphragm for water content determination down to trace levels.This coulometer has become indispensable in many laboratories thanks to its reliability, its backlit graphical display, the multi-language dialog and the simplicity of its operation. The clear display provides information regarding the relevant titration parameters and unambiguous indication of the progress of the titration in the form of a curve showing µg water over time.Recommended measuring range: 10 µg - 200 mg absolute water

831 KF Coulometer with generator electrode without diaphragm

2.831.0110

Inexpensive coulometer including titration cell with generator electrode without diaphragm for water content determination down to trace levels.This coulometer has become indispensable in many laboratories thanks to its reliability, its backlit graphical display, the multi-language dialog and the simplicity of its operation. The clear display provides information regarding the relevant titration parameters and unambiguous indication of the progress of the titration in the form of a curve showing µg water over time.Recommended measuring range: 10 µg - 200 mg absolute water

Coulometric water determination: reliably and accurately

The 831 Coulometer has proven its worth as a reliable instrument.

Available at an attractive price, it enables you to carry out highly accurate determinations of the water content – down to trace levels.

Coulometer for water content determination

Operation boiled down to the essentials

As these coulometers are operated with Dosinos, changing the KF solution takes no more than pushing a button.

To further facilitate operation, these instruments feature two operation modes: standard and expert. In the standard mode, only the functions required for routine work are available.

Dosino dosing units compatible with ISO/DIN GL45 thread reagent bottles

Flexible system to match your requirements

This coulometer offer you a high degree of flexibility.

You can choose between a generator electrode with or without diaphragm. And you can decide whether you want to operate it with the control panel as a stand-alone system or benefit from virtually unlimited functionality by controlling it via tiamo software.

Getting the water out of the sample

In some cases, direct titration is not possible, for example:

because the sample releases the water only at higher temperatures,
because the sample does not dissolve easily, or
because it reacts with the KF reagent.

The oven method or azeotropic distillation are possible solutions. These methods involve heating and evaporating the water contained in the sample and transferring it to the titration cell. Metrohm offers various sample preparation solutions to apply these methods.

Oven method to extract water from difficult samples for Karl Fischer titration

One step further: automated oven method

If you are dealing with high numbers of samples, then why not add automation to sample preparation?
Metrohm offers two sample changers with integrated oven. Depending on your requirements, you have a choice between a compact sample changer operated via control panel and a larger, software-controlled changer.

Compact oven sample changer to extract the moisture in samples for Karl Fischer titration

Downloads

8.756.5000

Brochure: 756/831 Coulometer – Water deterination down to trace levels

(PDF 953 KB)

The Metrohm system is easy to operate and saves us a lot of time …
Lin Li, Manager Oil Analysis Laboratory, WesTrac China