Hanna Instruments Karl Fischer Volumetric Titrator

The HI-903-02 Karl Fischer Volumetric Titrator for moisture analysis 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, sophisticated endpoint determination, dynamic dosing and background drift correction algorithms.
The result is an extremely adaptable titrator capable of titrating with superior accuracy and precision even for samples with low moisture content. The HI 903 dispenses the titrant, detects the endpoint and performs all necessary calculations automatically.
The HI-903-02 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, colour LCD display making it simple to view results. Choose from included methods or develop a custom method for almost any application or sample type. Using a USB flash drive or connecting the titrator to the HI 900PC application, methods (standard and user) can be upgraded, stored or deleted.

Clip-Lock Exchangeable Burette System
With Clip-Lock, it only takes a couple of seconds to exchange the reagent burettes to perform a different titration.
The Clip-Lock exchangeable burette system prevents cross contamination while reducing loss of time and reagents. Burettes simply slide out for quick exchanges, and detaching the aspiration and dispensing tubes from the titrant bottles is easy.
Interrupting an important cycle of analysis due to a malfunctioning burette is a thing of the past. With the HANNA Clip-Lock system you can simply substitute the burette and complete all your tests with the same titrant! Having several prepared burettes on hand will make the HANNA HI-903 one of the fastest and most versatile titration systems available.

Precision titrant delivery system
40,000 step, piston dosing pump
Accurate to 0.1%
Delivers as little as 0.125 µL of titrant
Precision ground, 5 mL glass burette with PTFE plunger, PTFE burette tubing, and polyurethane tube jacketing (thermally insulating, light blocking)
Glass anti-diffusion dispensing tip
Clip-Lock exchangeable burette system enables users to exchange reagent burettes in a matter of seconds

Sealed solvent system
Change to fresh solvent in a matter of seconds without opening the titration vessel
Minimises exposure to ambient humidity, reducing titrant consumption and saving time
PTFE solvent tubing is resistant to harsh KF solvents and titrants

Beaker top
Chemically-resistant reaction vessel cap and fittings
Quick-remove sample port plug with replaceable silicone rubber septum

Anti-diffusion burette tip
Delivers titrant in high turbulence zone, ensuring rapid reaction
Prevents unwanted diffusion of titrant

Built-in stirrer
Automatic, integrated magnetic stirrer adjustable from 200-2000 RPM
Optical feedback for automatic speed control
Optional external stirrer available

Rechargeable indicating desiccant
Prevents the ingress of ambient humidity into the sealed solvent system while maintaining full titrator functionality
Minimises changes to titrant titre
Indicates when adsorption capacity is depleted
Regenerates at 150°C

PTFE bottle cap
Caps fit any GL45-threaded bottle
Chemically resistant caps and fittings
Removable desiccant cartridges

Order Information:
HI-903-02 (230V) are supplied with dual platinum pin electrode, dosing pump, 5 mL burette assembly with tubing, air pump assembly with tubing, beaker and bottle top assemblies and all fittings, desiccant cartridges (4) with indicating desiccant, stir bar, waste bottle, calibration key, USB cable, power cable, HI 900PC application, USB flash drive, quality certificate, ISO 8655 burette compliance report and instruction manual binder.
Range

 

100 ppm to 100%



Resolution

 

1 ppm (0.0001%)



Result Units

 

%, ppm, mg/g, µg/g, mg, µg, mg/mL, µg/mL, mg/pc, µg/pc



Sample Type

 

liquid or solid



Determination

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 with optional pre-dispensing rate





Result Statistic

mean, standard deviation



Clip Lock

Dosing Pump Resolution

1/40000 of the burette volume (0.125 µL per dose)





Dosing Pump Accuracy

±0.1% of full burette volume





Syringe

5 mL precision ground glass with PTFE plunger





Valve

motor driven 3-way, PTFE liquid contact material





Tubing

PTFE with light block and thermal jacketing





Dispensing Tip

glass, fixed position, anti-diffusing





Titration Vessel

conical with operation volume between 50-150 mL





Solvent Handling System

sealed system, integrated diaphragm air pump



Electrode

Type

dual platinum pin, polarization electrode





Connection

BNC





Polarization Current

1, 2, 5, 10, 15, 20, 30 or 40 µA





Voltage Range

2 mV to 1000 mV





Voltage Resolution

0.1 mV





Accuracy (@25°C/77°F)

±0.1 mV



External Stirrer

Type

magnetic, optically regulated, digital stirrer





Speed

200-2000 rpm





Resolution

100 rpm



Peripheral Devices

PC

easily view, transfer, print or delete methods and reports via HI900PC application





USB Flash Drive

easily upgrade software or transfer methods and reports between devices using a USB drive





Laboratory Analytical Balance

RS232 to connect any laboratory balance





Printer

print directly from the HI 903 to a printer via parallel port





Monitor

instrument status and titrations can be viewed on a larger screen using any VGA compatible external monitor





Keyboard

alphanumeric text can be entered using an optional PS/2 keyboard



Graphic Display

 

5.7" (320 x 240 pixel) color LCD



Titration Methods

 

up to 100 (standard and user) methods



Data Storage

 

up to 100 complete titration reports and drift rate reports can be stored



GLP Conformity

 

Good Laboratory Practice and instrument data storage and printing



Languages

 

English, Portuguese and Spanish



Enclosure Material

 

ABS plastic and steel



Keypad

 

polycarbonate



Power Supply

 

“-01" model: 115VAC, 50/60 Hz;
“-02" model: 230VAC, 50/60 Hz;



Operating Environment

 

10 to 40°C, up to 95% RH



Storage Environment

 

-20 to 70°C, up to 95% RH



Dimensions

 

390 x 350 x 380 mm (15.3 x 13.8 x 14.9")



Weight

 

approximately 10 kg (22 lbs.)







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