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.
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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.
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.
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.
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.
Successive results from a titration method may be averaged with recording of the standard deviation.
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.
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.
Automatic, integrated magnetic stirrer adjustable from 200-2000 RPM with optical feedback for automatic speed control.
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.
A large, color LCD screen clearly shows the chosen titration method along with results, units, 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.
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, electrode ID codes, and calibration information.
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 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 HI904 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.
|Range||1 ppm to 5%|
|Resolution||0.1ppm to 0.0001%|
|Result Units||%, ppm, ppt, mg/g, μg/g, mg, μg, mg/mL, μg/mL, mg Br/100g, g Br/100g, mg Br, g Br|
|Sample Types||liquid or solid with external dissolution / extraction|
|Background Drift Correction||automatic or user-selectable value|
|Endpoint Criteria||fixed mV persistence, relative drift stop or absolute drift stop|
|Result Statistic||mean, standard deviation|
|Generator Configuration||diaphragm or diaphragm-less|
|Generator Current Control||automatic or fixed (400 mA)|
|Generator Type Detection||automatic|
|Titration Vessel||operating volume between 100 – 200 mL|
|Solvent Handling System||Sealed system with integrated diaphragm air pump|
|Sensor Type||HI76330 dual platinum pin polarization electrode|
|Polarization Current||1, 2, 5, or 10 μA|
|Voltage Range||2 mV to 1100 mV|
|Voltage Resolution||0.1 mV|
|Programmable Stirrer||magnetic, optically regulated, digital stirrer; 200 to 2000 rpm; resolution 100 rpm|
|Display||5.7” (320 x 240 pixel) color LCD|
|Methods||up to 100 (standard and user) methods|
|Logging Data||up to 100 complete titration reports and drift rate reports can be stored|
|Peripherals (Rear)||PC Connection, USB Flash Drive, Analytical Balance, Printer, External PC Keyboard|
|GLP Conformity||Good Laboratory Practice and instrument data storage and printing|
|Languages||English, Portuguese. Spanish, and French|
|Enclosure Material||ABS, PC and Stainless Steel|
|Operating Environment||10 to 40°C (50 to 104°F), up to 95% RH|
|Storage Environment||-20 to 70°C (-4 to 158°F), up to 95% RH|
|Power Supply||100-240 VAC; “-01” models, US plug (type A); “-02” models, European plug (type C)|
|Dimensions||315 x 205 x 375 mm (12.4 x 8.1 x 14.8 “)|
|Weight||approx. 4.3 kg (9.5 lbs.) with 1 pump, stirrer and sensors|