Materials Testing
    Karl Fischer Volumetric TitratorKarl Fischer Volumetric TitratorKarl Fischer Volumetric Titrator

Karl Fischer Volumetric Titrator

  • Titrator with high accuracy, great flexibility and repeatability.

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Why buy from Geneq? - find out more

The Karl Fischer Volumetric Titrator is an automatic titrator that complements our wide range of products dedicated to efficient and accurate laboratory analysis.

For scientists and professionals who need to accurately determine water content from 0.01 to 100%, our new generation of Karl Fischer volumetric titrator is designed to meet or exceed your technical requirements while offering a reduced cost of ownership. With state-of-the-art features in a compact design, this titrator provides accurate results and takes up less space in the lab. Get accurate water content determination at the touch of a button. Designed for the modern laboratory, this karl fischer titrator fits perfectly into your testing environment.

  • Compact design saves space in the lab without compromising your results.
  • Durable heat and chemical resistant body.
  • Sealed solvent system helps prevent water from entering the system, while minimizing your exposure to reagents.

Dynamic titrant dosing

The dynamic titrant dosing feature provides accurate and timely titration results by relating the volume of titrant dosed to the mV response of the titration reaction. This allows larger doses to be delivered at the beginning of titration and smaller, more accurate doses to be delivered at the end of titration.

Drift Rate Compensation

The Karl Fischer HI933 Volumetric Titrator automatically adjusts the titration calculation to account for the effects of ambient humidity entering the titration cell. This provides a more accurate result by correcting for water not present in the actual sample.

Averaging of titration results

Successive results of a karl fischer titration method can be averaged with recording of the standard deviation.

Titration record

The HI933 titration database can store information for up to 20 titrations. The database can be programmed to remind the user when to standardize their titrant, thus reducing analysis errors.

Endpoint selection criteria

The HI933 uses a dual platinum electrode for bivoltammetric endpoint determination. Users can choose endpoint criteria based on mV stability times or drift rates.

Multi-step cell preparation

A pre-titration step removes residual water present in the solvent and cell, providing a reliable baseline to start the analysis. The standby mode then keeps the solvent dry between titrations and when the titrator is not in use.

Be confident in your results.

Our unmatched 40,000 pitch piston dosing pump is capable of dosing extremely small and precise volumes of reagent, helping you achieve a highly accurate endpoint.

Designed to be tough

Suction and delivery tubes are made of durable, chemical-resistant PTFE and feature a light-blocking polyurethane outer sleeve to protect light-sensitive reagents

Anti-scatter dispensing tip

A specially designed glass dispensing tip accurately dispenses titrant into highly turbulent mixing areas, ensuring a rapid response. Its angled construction prevents titrant diffusion into the sample solvent.

Titration and solvent system


Efficient sample handling

The HI933 features a quick-release sample port with a replaceable rubber septum for quick and easy sample introduction into the titration vessel. A built-in magnetic stirrer ensures homogeneity for an accurate and fast reaction.

Chemical-resistant titration vessel

The glass and PTFE titration cell and fittings are designed to withstand the aggressive solvents and reagents used in Karl Fischer titration.

Sealed solvent system

The titration vessel is completely sealed to minimize exposure to ambient moisture, keep the system dry and reduce solvent consumption while saving time between titrations. The solvent can be replaced in seconds without opening the titration vessel.

Visually recognizable desiccant

A refillable, color-indicating silica gel desiccant prevents ambient moisture from entering the sealed system while maintaining full titrator functionality. The color change of the desiccant allows the user to recognize when its adsorption capacity is depleted and it is ready to be replaced or refilled.

Interface and display


All your important information is displayed.

Our large color screen shows you everything you need to know during the test.

Track your progress in real time.

Our live titration curve helps you quickly recognize trends and problems that may occur during your analysis.

Explore the titrator menus with ease.

Customizable buttons allow you to clearly navigate between screens so you don't get lost.

Titrator data and reports


Highlight your most important information.

Final reports are customizable so you can make sure you view and store your most important information.

Preserve the integrity of your data.

Our software allows you to record complete GLP (Good Laboratory Practice) data, so there is no need to compromise the quality of your results.

Easily move your information from one device to another.

Use our software or a USB stick to easily transfer files between your titrator and your computer.

Connectivity and functionality


Easily view and print reports.

You can print reports directly from the titrator with a connected printer and easily view results with a connected monitor.

Enjoy versatility.

Connect the devices that help you most, whether it's an analytical balance for automatic sample capture or a printer for your reports.

Product NameVolumetric Karl Fischer Titrator - HI933
Quote RequiredNo
Titration Range100 ppm to 100%
Titration Resolution1 ppm to 0.0001%
Measurement Units%, ppm, mg/g, μg/g, mg, μg, mg/mL, μg/mL, mg/pc, μg/pc
Sample Typeliquid or solid
Pre-Titration Conditioningautomatic
Background Drift Correctionautomatic or user-selectable value
Endpoint Criteriafixed mV persistence, relative drift stop or absolute drift stop
Dosing Typedynamic with optional pre-dispensing
Result Statisticsmean, standard deviation
Dosing Accuracy±0.1% of full burette volume
Syringe5 mL precision ground glass with PTFE plunger
Valvemotor-driven 3-way, PTFE liquid contact material
TubingPTFE with light block and thermal jacketing
Dispensing Tipglass, fixed position, anti-diffusing
Titration Vesselconical with operation volume between 50 and 150 mL
Solvent Handling Systemsealed system, integrated diaphragm air pump
Connection TypeBNC
Polarization Current1, 2, 5, 10, 15, 20, 30 or 40 uA
mV Range2 mV to 1000 mV
mV Resolution0.1 mV
mV Accuracy±0.1%
Burette5 mL burette
Dosing Pump Resolution1/40000 of the burette volume (0.125 μL per dose) with 5 mL burette
Stirrer Typemagnetic, optically regulated, digital stirrer
Stirrer Speed200 - 2000 RPM
Stirrer Resolution100 RPM
Titrator Methodsup to 100 standard and user defined
Reportsup to 100 complete titration reports and drift rate reports
Built-in Magentic Stirrermagnetic, optically regulated, digital stirrer; 200 to 2000 rpm; resolution 100 rpm
Display5.7” graphical color display with backlight
LanguagesEnglish, Portuguese, Spanish, and French
Power Supply100-240 Vac, 50/60 Hz / 0.5 Amps
Dimensions315 x 205 x 375 mm (12.4 x 8.1 x 14.8")
WeightApproximate 4.3 kg (9.5 lbs) with 1 pump, stirrer and sensors
Ordering InformationHI933 is supplied with HI76320 dual platinum pin electrode, dosing pump, 5 mL burette assembly with tubing, air pump/stirrer assembly with tubing, beaker and bottle top assemblies and all fittings, desiccant cartridges (4) with indicator desiccant, stir bar, waste bottle, calibration key, USB cable, power cable, USB flash drive, quality certificate, ISO 8655 burette compliance report, and instruction manual binder