Karl Fischer Titrator

Hanna Karl Fischer Titration

Hanna Karl Fischer titrators are designed for high accuracy, flexibility and reproducibility, allowing the user to obtain both accurate results and high-speed analysis. These titrators are designed to perform titrations for a variety of applications. Reports and methods can be transferred to a PC via a USB interface or saved to a USB storage device. Users can also print reports directly from these titrators using a standard parallel printer. An external monitor and keyboard may be attached for added versatility, as well as an analytical balance for automatic sample mass entry for titrations.

  • Small footprint, requires minimal bench space
  • Casing made with strong, chemically resistant plastic
  • Powerful built-in algorithms for termination criteria based on fixed mV endpoint or absolute/relative drift
  • Titrant standardization and sample analysis averaging
  • Minimized water vapor entry with the sealed solvent system
  • Balance interface for automatic weighing
  • Support for 100 titration methods
  • User-customizable reports
  • Clearly displayed warning and error messages

Model Overview

Fully customizable, these titrators deliver accurate results and intuitive user experience, all in a compact package.

HI933 Karl Fischer Volumetric Titrator for Moisture Determination

HI933 Karl Fischer Volumetric Titrator for Moisture Determination

The HI933 is an automatic volumetric Karl Fischer titrator with high accuracy, great flexibility, and repeatability.

HI934 Karl Fischer Coulometric Titrator

HI934 Karl Fischer Coulometric Titrator

The HI934 is a Karl Fischer coulometric titrator with high accuracy, great flexibility, and repeatability.

HI933 Karl Fischer Volumetric Titrator
for Moisture Determination

HI933 Karl Fischer Volumetric Titrator for Moisture Determination

The HI933 is an automatic volumetric Karl Fischer titrator with high accuracy, great flexibility and repeatability.

The titrator is designed to perform titrations for a variety of sample types/matrices, allowing the user to obtain both good results and high-speed analysis. The HI933 analyzes for water content ranging from 100 ppm to 100%. This powerful titrator automatically dispenses the titrant, detects the endpoint, and performs all necessary calculations and graphing.

HI933 Burette and Dosing System

Precision dosing pump

Precision dosing pump

Our unmatched 40,000 step piston driven pump is capable of delivering as little as 0.125 μL of titrant accurately and precisely.

Anti-diffusion dispensing tip

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.

Chemically resistant tubing and syringe

Chemically resistant tubing and syringe

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

Clip LockTM exchangeable burette system

Clip Lock™ exchangeable burette system

With Hanna’s Clip-Lock™ burette feature, it only takes a few seconds to exchange titrants and reagents preventing cross-contamination and saving time.

HI933 Titration and 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 reactions.

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 its adsorption capacity has depleted and is ready for replacement or recharging.

HI933 Titration Capabilites

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 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 titration method may be averaged with a 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.

HI934 Karl Fischer Coulometric Titrator

HI934 Karl Fischer Coulometric Titrator

The HI934 is a Karl Fischer coulometric titrator with high accuracy, great flexibility and repeatability.

The titrator is designed to perform titrations for a variety of applications, allowing the user to obtain both good results and high-speed analysis. The HI934 analyzes for water content ranging from 1 ppm to 5%. This powerful titrator effectively monitors the KF reaction, detects the endpoint, and performs all necessary calculations and graphing.

HI934 Coulometric Reagent System

HI934 Coulometric Reagent System

Precision iodine generation

Hanna’s dosing algorithm allows for an extremely small amount of iodine necessary for the Karl Fischer reaction to be generated electrolytically using a pulsed current up to 400 mA delivering titrant accurately and precisely.

HI934 Titration and Solvent System

Chemically resistant titration vessel and tubing

Chemically resistant titration vessel and tubing

The glass titration cell and PTFE tubing is designed to withstand the harsh solvents and reagents involved in Karl Fischer reactions.

Sealed solvent system

Sealed solvent system

Ground glass joints completely seal the glass titration cell minimizing exposure to ambient humidity, keeping the system dry, and reducing reagent consumption while saving time between titrations. Solvent may be exchanged in a matter of seconds with a quick fitting adjustment.

Molecular sieve desiccant

High efficiency molecular sieve desiccant helps maintain low and stable drift rates within the titration cell while preventing the ingress of ambient humidity into the sealed solvent system.

Digital built-in stirrer

Automatic, integrated magnetic stirrer adjustable from 200-2000 RPM with optical feedback for automatic speed control.

HI934 Titrator Capabilities

Dynamic titrant dosing

The titration speed feature allows for timely and accurate titration results by relating the amount of iodine generated to the mV response from the Karl Fischer reaction.

Drift rate compensation

The HI934 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 titration method may be averaged with recording of the standard deviation.

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.

Selectable endpoint criteria

Selectable endpoint criteria

The HI934 employs a dual  platinum-pin electrode for bivoltammetric endpoint determination. Users may choose termination criteria based on mV stability times or drift rates.

Common Features to HI933 and HI934

Data, Data Storage, and Methods of Analysis

Customizable titration reports

Customizable titration reports

Each titration report is fully customizable so users can ensure they are storing and filing the appropriate data required for their application and procedures.

Customizable methods

Customizable methods

These Karl Fischer titrators can store up to 100 user-defined or standard titration methods. Each method may be customized and optimized for performance based on application and user requirements.

Flexible GLP management

Flexible GLP management

All necessary GLP (Good Laboratory Practice) information can be recorded with each sample including: sample identification, company and operator name, date, time, electrode ID codes, and calibration information.

Effortless data transfer

Effortless data transfer

Data can easily be transferred to a USB flash drive or PC with the Hanna HI900PC application software. The USB port allows for the transfer of titration methods, titration reports, and software upgrades via USB flash drive.

Titration method support

Onsite installation, training, and customization is available from one of our Applications or Service experts. Hanna offers continued support via phone or webinar for any questions you might have along the way.

Adaptable standard methods

Our technical experts can program and customize standard methods developed by such affiliations as ISO, ASTM, AOAC, AOCS, EPA, and more directly onto your titrator. Ask our Sales Consultants which standard methods are possible with our HI934 Karl Fischer system.

Interface and Display

Detailed titration graphs

Detailed titration graphs

A real-time titration curve can be displayed during each titration; this feature is useful when new methods are tested or when a procedure requires optimization.

Interactive color display

Interactive color display

A large, color LCD screen clearly shows the chosen titration method along with results, units, drift rate, and mV value.

Simple and quick navigation

Simple and quick navigation

Virtual key selections present on the display allow for simple and quick navigation between screens and menus without getting lost in a nest of information.

Configurable balance interface

Configurable balance interface

Sample size may be automatically entered from any laboratory analytical balance with a RS232 serial output saving time and labor.

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