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.
HI934
Karl Fischer Coulometric Titrator
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Dynamic Titrant Dosing
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.
Titration Results Averaging
Successive results from a titration method may be averaged with recording of the standard deviation.
Selectable Endpoint Criteria
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.
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.
Titration 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.
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.
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.
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.
Digital Built-in Stirrer
Automatic, integrated magnetic stirrer adjustable from 200-2000 RPM with optical feedback for automatic speed control.
Titrator Data & Reporting
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
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.
Resources
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Specifications
Specification Name Detail sku HI934 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 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 dynamic Result Statistics 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 Sensor Connection BNC Polarization Current 1, 2, 5, or 10 μA Voltage Range 2 mV to 1100 mV Voltage Resolution 0.1 mV Accuracy ±0.1% 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 Keypad Polyester 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 Warranty 2 years - Product Manuals
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