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.

Κωδικός προϊόντος: ΗΙ934 Κατηγορίες: , Ετικέτα:

Πληροφορίες προϊόντος

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

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

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.




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.

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.

Titration results averaging

Successive results from a titration method may be averaged with recording of the standard deviation.

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.

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.






Product NamePotentiometric titrator with single pump and one input analog board, 230 VAC
Stock Status MessageCall if accurate shipping time is required
Quote RequiredNo
mV Range-2000.0 to 2000.0 mV
mV Resolution0.1 mV
mV Accuracy±0.1 mV
mV Calibrationsingle point offset
pH Range-2.000 to 20.000 pH; -2.00 to 20.00 pH; -2.0 to 20.0 pH
pH Resolution0.001 pH; 0.01 pH; 0.1 pH
pH Accuracy±0.001 pH
pH Calibrationup to five-point calibration, eight standard buffers and five custom buffers
pH Temperature Compensationautomatic from -5.0 to 105.0°C; 23.0 to 221.0°F
ISE Range1 x 10⁻⁶ to 9.99 x 10¹⁰ concentration
ISE Resolution1; 0.1; 0.01 concentration
ISE Accuracy±0.5% (monovalent ions); ±1% (divalent ions)
ISE Calibrationautomatic, up to five point calibration, seven fixed standard solutions available (0.01, 0.1, 1, 10, 100, 1000, 10000 choice of concentration) and five custom solutions
Temperature Range-5.0 to 105.0°C; 23.0 to 221.0°F; 268.2 to 378.2K
Temperature Resolution0.1°C; 0.1°F; 0.1K
Temperature Accuracy±0.1°C; ±0.2°F; ±0.1K, excluding probe error
Potentiometric Titrationsacid/base (pH or mV-mode), redox, precipitation, complexometric, non-aqueous, ion-selective, argentometric
Analog Boards Capabilityone analog board for pH/ORP/ISE; not upgradeable
Measurement Unitsuser-specified expression of concentration units to suit specific calculation requirements
Endpoint Criteriasingle equivalence point (1st or 2nd derivative) or fixed pH/mV value
Dosing Pump Capabilityone included can be upgraded for two
Flow Rateuser-selectable from 0.1 mL/min to 2 x burette volume/min
Dosing Accuracy±0.1% of full burette volume
Buretteone 25 mL burette included
Burette Size Capability5, 10, 25, and 50 mL (auto-detection)
Dosing Pump Resolution1/40000
Stirrer Typeoverhead propeller type, 200 to 2500 rpm, resolution 100 rpm
Titrator Methodsup to 100 methods (standard and user-defined)
Linked Methodsnot available
Back Titrationsnot available
Real Time & Stored GraphsmV-volume or pH-volume titration curve, 1st derivative curve or 2nd derivative curve; pH mode, mV mode or ISE mode
GLP Conformityinstrumentation data storage and printing capabilities
Autosampler Compatiblenot available
Logging Memoryup to 100 titration and pH/mV/ISE reports
Display5.7” (320 x 240 pixel) backlit color LCD
Power Supply100-240 VAC; "-01" models, US plug (type A); "-02" models, European plug (type C)
Dimensions315 x 205 x 375 mm (12.4 x 8.1 x 14.8 ")
Weightapprox. 4.3 kg (9.5 lbs.) with 1 pump, stirrer and sensors
Ordering InformationEach HI931 potentiometric titrator is supplied with titrator, pump assembly, burette assembly, electrodes holder and stirrer, burette blank support, pump and burette locking screws with plastic head, temperature probe, shorting cap, power adapter, USB cable, instruction manual, USB Memory Stick, HI900 PC application (installation kit on USB stick), and quality certificate.