For scientists and professionals who need exact water content determination from 1 ppm to 5%, our new generation of the Coulometric 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.
The dynamic titration speed allows for timely and accurate titration results by relating the amount of iodine generated to the mV response from the Karl Fischer reaction. This provides for a larger generation of iodine near the beginning of a titration and more precise pulses near the titration endpoint.
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.
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.
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.
Two styles of generators are available for the HI934; a fritted design ideal for samples with low water content and high accuracy demand; and a fritless generator allowing for easier cleaning and maintenance.
Our 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 iodine accurately and precisely.
The glass titration cell and PTFE tubing is designed to withstand the harsh solvents and reagents involved in Karl Fischer reactions.
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.
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.
A large, color LCD screen clearly shows the chosen titration method along with results, units, total water, 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.
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.
The HI934 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 HI934 Karl Fischer system.
Product Specifications:
Principiul titrării
coulometric Karl Fischer
Domeniul titrării
1 ppm to 5%
Rezoluția titrării
0.1ppm to 0.0001%
Measurement Units
%, ppm, ppt, mg/g, μg/g, mg, μg, mg/mL, μg/mL, mg Br/100g, g Br/100g, mg Br, g Br
Sample Type
liquid or solid with external dissolution / extraction
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 rate
Result Statistics
mean, standard deviation
Titration Vessel
operating volume between 100 – 200 mL
Solvent Handling System
sealed system, integrated diaphragm air pump
Connection Type
BNC
Polarization Current
1, 2, 5, or 10 μA
mV Range
2 mV to 1100 mV
mV Resolution
0.1 mV
mV Accuracy
±0.1%
Stirrer Type
magnetic, optically regulated, digital stirrer
Stirrer Speed
200 to 2000 rpm
Stirrer Resolution
100 rpm
Titrator Methods
up to 100 methods (standard and user-defined)
Reports
up to 100 complete titration reports and drift rate reports can be stored
GLP Conformity
Good Laboratory Practice and instrument data storage and printing
Peripheral Devices
connections for VGA display, PC-keyboard, parallel printer, USB device input, RS232
Ecran
5.7” (320 x 240 pixel) color LCD
Keypad
polycarbonate
Languages
English, Portuguese. Spanish, and French
Sursă de curent
100-240 VAC; "-01" models, US plug (type A); "-02" models, European plug (type C)
Mediu
operating
Dimensiune
315 x 205 x 375 mm (12.4 x 8.1 x 14.8 ")
Greutate
approximate 4.3 kg (9.5 lbs.)
HI934 Coulometric Karl Fischer Titrator Manual
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