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Customer Support: (800) 842-6629

Volumetric Karl Fischer Titrator - HI933


SKU: HI933-01 Categories ,

In stock

For scientists and professionals who need exact water content determination from 0.01 to 100%, our new generation of the Volumetric Karl Fischer Titrator is engineered to meet or exceed your technical requirements while delivering a lower cost of ownership. With cutting-edge features packed into a compact design, this titrator delivers accurate results and requires less space in the lab. Get accurate water content determination at the push of a button. Designed for the modern lab, this karl fischer titrator is the perfect fit for your testing environment.

  • Compact design will save space in the lab without compromising your results.
  • Durable heat and chemical resistant body.
  • Sealed solvent system helps to keep water out of the system, while giving you minimal exposure to the reagents.


HI933 Volumetric Karl Fischer Titrator Capabilities

HI933 Karl Fischer Titrator

Dynamic Titrant Dosing

The dynamic dosing feature allows for timely and accurate titration results by relating the titrant volume dosed to the mV response from the titration reaction. This provides for larger doses near the beginning of a titration and smaller, more precise doses near the titration endpoint.

Drift Rate Compensation

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

Titration Results Averaging

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

Titrant Recordkeeping

The HI933’s titrant database can store information for up to 20 titrants. The database may be programmed to remind a user when to standardize their titrant, reducing error in analysis.

Selectable Endpoint Criteria

The HI933 employs a dual platinum pin electrode for bivoltammetric endpoint determination. Users may choose termination criteria based on mV stability times or drift rates.

Multistage Cell Preparation

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

Burettes & Dosing System

Burette and Dosing

Be confident in your results.

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

Engineered to be strong

Aspiration and dispensing tubes are constructed of durable, chemically resistant PTFE and feature a light-blocking polyurethane outer sleeve to protect light sensitive reagents.

Anti-Diffusion Dispensing Tip

A specially designed glass dispensing tip delivers titrant precisely into high turbulence mixing zones, ensuring a rapid reaction. Its angular construction helps prevent titrant from diffusing into the sample solvent.

Titration & Solvent System

Efficient Sample Handling

The HI933 features a quick-remove sample port with a replaceable rubber septum allowing for fast and easy sample introduction to the titration vessel. An integrated magnetic stirrer ensures homogeneity for an accurate and speedy reaction.

Chemically Resistant Titration Vessel

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

Sealed Solvent System

The titration vessel is completely sealed to minimize exposure to ambient humidity, keep the system dry, and reduce titrant consumption while saving time between titrations. Solvent may be exchanged in a matter of seconds without opening the titration vessel.

Visually Recognizable Desiccant

A rechargeable, color-indicating, silica gel desiccant prevents the ingress of ambient humidity into the sealed system while maintaining full titrator functionality. The desiccant color change allows a user to recognize when it’s adsorption capacity has depleted and is ready for replacement or recharging.

Titrant and Solvent System

Interface & Display

All of your important information is displayed.

Our large color display shows you everything you need to know during testing.

Track your progress in real-time.

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

Explore titrator menus with ease.

Custom keys allow you to clearly navigate between screens so you don’t get lost.

Titrator Data & Reporting

Highlight your most important information.

Final reports are customizable so you can make sure you are viewing and storing your most important information.

Safeguard the integrity of your data.

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

Move your information easily across devices.

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

USB Transfer

Connectivity & Functionality

View and print reports easily.

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

Take advantage of the versatility.

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

Additional information

Weight 12.19 kg


SKU HI933-01
Name Volumetric Karl Fischer Titrator – HI933
Titration Range 100 ppm to 100%
Titration Resolution 1 ppm to 0.0001%
Measurement Units %, ppm, mg/g, µg/g, mg, µg, mg/mL, µg/mL, mg/pc, µg/pc
Sample Type liquid or solid
Pre-Titration Conditioning automatic
Background Drift Correction automatic or user-selectable value
Endpoint Criteria fixed mV persistence, relative drift stop or absolute drift stop
Dosing Type dynamic with optional pre-dispensing
Result Statistics mean, standard deviation
Dosing Accuracy ±0.1% of full burette volume
Syringe 5 mL precision ground glass with PTFE plunger
Valve motor-driven 3-way, PTFE liquid contact material
Tubing PTFE with light block and thermal jacketing
Dispensing Tip glass, fixed position, anti-diffusing
Titration Vessel conical with operation volume between 50 and 150 mL
Solvent Handling System sealed system, integrated diaphragm air pump
Connection Type BNC
Polarization Current 1, 2, 5, 10, 15, 20, 30 or 40 uA
mV Range 2 mV to 1000 mV
mV Resolution 0.1 mV
mV Accuracy ±0.1%
Burette 5 mL burette
Dosing Pump Resolution 1/40000 of the burette volume (0.125 µL per dose) with 5 mL burette
Stirrer Type magnetic, optically regulated, digital stirrer
Stirrer Speed 200 – 2000 RPM
Stirrer Resolution 100 RPM
Titrator Methods up to 100 standard and user defined
Reports up to 100 complete titration reports and drift rate reports
Connectivity USB: flash drive compatibility for transfer of methods and reports
RS232 for analytical balance
Parallel printer port
Built-in Magentic Stirrer magnetic, optically regulated, digital stirrer; 200 to 2000 rpm; resolution 100 rpm
Display 5.7 in. graphical color display with backlight
Keypad polyester
Languages English, Portuguese, Spanish, and French
Power Supply 100-240 Vac, 50/60 Hz / 0.5 Amps
Environment Operating: 10 to 40°C (50 to 104°F), up to 80% RH
Storage: -20 to 70°C (-4 to 158°F), up to 95% RH
Dimensions 315 x 205 x 375 mm (12.4 x 8.1 x 14.8 in.)
Weight Approximate 4.3 kg (9.5 lbs) with 1 pump, stirrer and sensors

Ordering Info

HI933 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


Volumetric Karl Fischer Titrator – HI933