for Moisture Determination
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.
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Our unmatched 40,000 step piston driven pump is capable of delivering as little as 0.125 µL of titrant accurately and precisely.
Aspiration and dispensing tubes are constructed of durable, chemically resistant PTFE and feature a light-blocking polyurethane outer sleeve to protect light sensitive reagents.
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.
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.
The glass and PTFE titration cell and fittings are designed to withstand the harsh solvents and reagents involved in Karl Fischer reactions.
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.
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.
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.
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.
Successive results from a titration method may be averaged with recording of the standard deviation.
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.
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.
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.
A large, color LCD screen clearly shows the chosen titration method along with results, units, dosing size, titration volume, drift rate, and mV value.
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.
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.
Each titration report is fully customizable so users can ensure they are storing and filing the appropriate data required for their application and procedures.
All necessary GLP (Good Laboratory Practice) information can be recorded with each sample including: sample identification, company and operator name, date, time, and electrode ID codes.
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.
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.
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.
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.
Sample size may be automatically entered from any laboratory analytical balance with a RS232 serial output saving time and labor.
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.
HI900 Series titration systems can be easily incorporated into any existing GLP data management program.
Titration reports are fully customizable
Titration results can be viewed on-screen or transferred to a USB storage device
Titration graphs can be viewed on-screen or saved as images and transferred along with titration report
The HI903 comes with a standard method pack
The HI903 keeps the solvent dry between samples and corrects for water entering the cell (drift rate)
Titration results are displayed with links to average results or a user-customized report
The HI903 stores standardization information for up to 20 titrants and displays a reminder when standardization is due
Enter sample size automatically from any laboratory analytical balance with RS232 serial output
Customize methods for any application
100 ppm to 100%
1 ppm to 0.0001%
%, ppm, mg/g, μg/g, mg, μg, mg/mL, μg/mL, mg/pc, μg/pc
liquid or solid
Background Drift Correction
automatic or user-selectable value
fixed mV persistence, relative drift stop or absolute drift stop
dynamic with optional pre-dispensing rate
mean, standard deviation
Clip Lock™ Burette System
Dosing Pump Resolution
1/40000 of the burette volume (0.125 μL per dose) with 5 mL burette
Dosing Pump Accuracy
±0.1% of full burette volume
5 mL precision ground glass with PTFE plunger
motor-driven 3-way, PTFE liquid contact material
PTFE with light block and thermal jacketing
glass, fixed position, anti-diffusing
conical with operation volume between 50-150 mL
Solvent Handling System
sealed system, integrated diaphragm air pump
HI76320 dual platinum pin, polarization electrode
1, 2, 5, 10, 15, 20, 30 or 40 μA
2 mV to 1000 mV
magnetic, optically regulated, digital stirrer
easily view, transfer, print or delete methods and reports via HI900PC application
USB Flash Drive
easily upgrade software or transfer methods and reports between devices using a USB drive
Laboratory Analytical Balance
RS232 to connect any laboratory balance
print directly from the HI903 to a printer via parallel port
instrument status and titrations can be viewed on a larger screen using any VGA-compatible external monitor
alphanumeric text can be entered using an optional PS/2 keyboard
5.7” (320 x 240 pixel) color LCD
up to 100 (standard and user) methods
up to 100 complete titration reports and drift rate reports can be stored
Good Laboratory Practice and instrument data storage and printing
English, Portuguese, Spanish, and French
ABS plastic and steel
“-01” models, US plug (type A)
“-02” models, European plug (type C)
10 to 40°C, up to 95% RH
-20 to 70°C, up to 95% RH
390 x 350 x 380 mm (15.3 x 13.8 x 14.9”)
approximately 10 kg (22 lbs.)
HI903-01 and HI903-02 are supplied with HI76320 dual platinum pin electrode, dosing pump, 5 mL burette assembly with tubing, air pump assembly with tubing, beaker and bottle top assemblies and all fittings, desiccant cartridges (4) with indicating desiccant, stir bar, waste bottle, calibration key, USB cable, power cable, HI900PC application, USB flash drive, quality certificate, ISO 8655 burette compliance report and instruction manual binder.