Karl Fischer Volumetric Titrator – HI903

The HI903 Karl Fischer Volumetric Titrator is an automatic titrator that complements our wide range of products dedicated to efficient and accurate laboratory analysis. The HI903 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.

Burette and dosing system

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

• 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

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

Titration and solvent system

Efficient sample handling

• The HI903 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 it’s adsorption capacity has
  depleted and is ready for replacement or recharging.

Titrator capabilities

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 HI903 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.

Titrant recordkeeping

• The HI903’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 HI903 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.

Interface and display

Interactive color display

• A large, color LCD screen clearly shows the chosen titration method along with results, units, dosing size, titration volume, drift rate, and mV value. Titration results are displayed with links to average results or a user-customized report

Simple & 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.

Fully configurable balance interface

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

Connectivity and functionality

Multiple peripherals

• Users can print reports directly from the titrator 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.

Data and storage

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. Titration graphs can be viewed on-screen or saved as images and transferred along with titration report.

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.

Flexible GLP management

• HI900 Series titration systems can be easily incorporated into any existing GLP data management program. 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

• 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.

Methods of analysis

Methods

• The HI903 comes with a standard method pack

Customizable methods

• The HI903 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.

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 HI903 Karl Fischer system.

Specifications