HANNA instruments - HI 903

Manufactured by  HANNA instruments
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An extremely adaptable titrator capable of titrating with superior accuracy and precision even for samples with low moisture content

The HI 903, Karl Fischer, Volumetric Titrator ,is an extension of HANNA’s highly successful potentiometric titrator platform.The HI 903 combines an ultra-high precision titrant delivery system with optically regulated magnetic stirring and sophisticated endpoint determination, dynamic dosing and background drift correction algorithms.  
  
The HI 903 comes equipped with a solvent handling system to reduce cell conditioning time and can be connected directly to your laboratory balance via serial interface.The HI 903’s powerful software and intuitive menus are easily navigated on the large color LCD display making it simple to view results, choose from included methods or develop a custom method for almost any application or sample type.  
  
The result is an extremely adaptable titrator capable of titrating with superior accuracy and precision even for samples with low moisture content.
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Features of HI 903

Rechargeable Indicating Desiccant

  • Prevents ingress of ambient humidity into the sealed solvent system while maintaining full titrator functionality  

  • Minimizes changes to titrant titer  

  • Indicates when adsorption capacity is depleted  

  • Regenerates at 150°C  

    Easy to Operate  

  • User friendly interface  

  • Context sensitive help screens  

  • Self diagnostic features for peripheral devices including pump, valve, burette and stirrer  

    Easy to View Results  

  • 7.5” (320 x 240 pixel) backlit color LCD  

  • Titration graphs can be displayed on the LCD and saved as a bitmap  

  • Results are displayed directly in the selected units  

    Beaker top  

  • Chemically-resistant reaction vessel cap and fittings  

  • Quick-remove sample port plug with replaceable silicone rubber septum   

    Anti-diffusion burette tip  

  • Accurately delivers as little as 0.125 µL of titrant  

  • Delivers titrant in high turbulence zone, ensuring rapid reaction.  

  • Prevents unwanted diffusion of titrant  

    Sealed Solvent System  

  • Change to fresh solvent in a matter of seconds without opening the titration vessel  

  • Minimizes exposure to ambient humidity, reducing titrant consumption and saving time  

  • PTFE solvent tubing is resistant to harsh KF solvents and titrants  

    Built-in stirrer  

  • Automatic, integrated magnetic stirrer adjustable from 200-2000 RPM  

  • Optical feedback for automatic speed control  

  • Optional external stirrer available PTFE Bottle Cap  

  • PTFE caps fit any GL45-threaded bottle  

  • Chemically resistant caps and fittings  

  • Desiccant cartridges allow pressure equalization while preventing ambient moisture ingression

General Specifications
Depth 13.8 in
Height14.9 in
Width 15.3 in
Weight22 lbs
Titrator TypePotentiometric
Additional Specifications

Features and Scope  
Range of Titratable Water Content: 100 ppm to 100%  
Sample Type: Solid or liquid  
  
Determination  
Pre-Titration Conditioning: Automatic  
Background Drift Correction: Automatic or user selectable value  
Endpoint Criteria: Fixed mV persistence, relative drift stop, absolute drift stop  
Dosing: Dynamic with optional pre-dispensing rate  
Result Units: %, ppm, mg/g, µg/g, mg, µg, mg/mL, µg/mL, mg/pc, µg/pc  
Result Statistics: Mean, standard deviation  
  
Interfaces  
BNC: Measuring Input for dual platinum pin, polarization electrode  
PC: PC connectivity for transfers of methods and titration results  
USB: Flash drive compatibility for transfers of methods, titration results and software upgrade files  
RS 232: Analytical laboratory balance interface  
Parallel Port: Printer connectivity  
Stirring Connection: Option for control of external stirring apparatus  
VGA: Monitor instrument status and titrations from a distance using any VGA compatible external monitor  
PS/2: Enter alphanumeric text with an optional full keyboard  
  
Hardware  
Display: 7.5” (320 x 240 Pixel) Color LCD  
Titration Vessel: Conical with operating volume between 50-150 mL  
Clip-Lock™ Exchangeable Burette System:  
Syringe: 5 mL precision ground with Teflon plunger; Dosing Pump: 40,000 Step (0.125 µL Resolution)  
Dispensing Tip: Glass, fixed position, anti-diffusion; Valve: Motor-driven 3/2-way, Teflon liquid contact material  
Tubing: Teflon with light block and thermal jacketing  
Mixing System: Optically regulated, digital, magnetic stirring 200-2000 RPM with 100 RPM resolution  
Solvent Handling System: Add fresh or remove depleted solvent without opening cell  
  
Electrode: Dual platinum pin, polarizable electrode  
GLP Conformity: Instrumentation data storage and printing capabilities  
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

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