HANNA instruments - HI 901/902

Complete Analytical Titration Systems Tailor-made to meet your Industry's Standards

HI 901/902 is an automatic titrator from HANNA® that complements our wide range of products dedicated to quick and accurate laboratory analysis. Each unit is provided with numerous features amenable to routine samples analysis. HI 901/902 performs acid/base, potentiometric titrations. This versatile titrator offers a total of 100 methods: 89 of which can be customized. When powered on, the instrument initiates an internal diagnostics check and then readies itself for the first titration of the day. A large LCD screen clearly shows the chosen method, correlated information and also indicates which parameters may be adjusted. A real-time titration curve is shown on the display; this feature is useful when new methods are tested or when a procedure needs to be optimized. At the end of the titration, all data, including the graph, are automatically stored in memory and can be copied to disk via the built-in floppy drive or through direct connection with the serial cable supplied with the titrator. The device is equipped with an RS485 serial port.

HI 902 -Complete Analytical Titration System w/ 2 Burettes

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Features of HI 901/902

320 x 240 pixel LCD w/backlight.
Precise dosing system (accuracy under 0.1% of burette volume).
Support up to 100 titration methods (standard and user defined).
Clip Lock™ — change burettes quickly with auto burette recognition
Dynamic/Linear dosing feature.
Fixed end point potential or pH.
Equivalence point detection (first derivative and second derivative).
The results are displayed directly in the selected units.
Titration graph can by displayed on-screen & saved.
User customized reports can be printed, saved on floppy disk or transferred to PC via RS232 interface.
Reminders for titrant age and standardization expiration.
Self diagnostic features for peripheral devices including pump, valve, burette and stirrer.

General Specifications

Depth	13.8 in
Height	14.9 in
mV Resolution	0.1 mV
Width	15.3 in
pH Resolution	Selectable
Power Requirements	115 Vac or 230 Vac, 50/60 Hz, fuse-protected
Weight	22 lbs (with one pump)
Titrator Type	Multi-Parameter

Additional Specifications

Resolution: 0.1°C
Accuracy: ±0.1 mV / ±0.001 pH / ±0.1°C
Burette Capacity: 5 mL (±5 µl), 10 mL (±10 µl), 25 mL (±25 µl) and 50 mL (±50 µl)
with 0.001 mL display resolution
Burette Resolution: 1/40000
Dosing Accuracy: 0.1% of full burette volume
Display: graphic LCD 120 x 90 mm (4.7 x 3.5"); 320 x 240 pixel resolution
Menu Language: English, Italian and Portuguese
Method: 100 (11 standard, 89 user-defined)
Burette Auto Detection: burette size is automatically recognized when inserted into the unit
Programmable Stirrer: propeller type, 100-2500 RPM with 100 rpm resolution
Flow Rate: user-selectable from 0.1 mL/min to 2x vol. burette/min
Temperature Compensation: pH measurements are automatically temperature compensated
pH Calibration: manual or automatic, at 1-5 points with 4 buffer sets for custom buffers
Potentiometric Titrations: Acid/Base (pH or mV mode), Redox, Precipitation, Complexometric, non aqueous, ion-selective, argentometric (in mV mode only)
Titration Methods: fixed mV or pH end-point detection and first equivalency point detection (with the first or second derivative of titration curve)
Real Time Data: mV/volume or pH/volume titration curve, graph of first or second derivatives
Data Storage: up to 100 complete titrations and pH/mV logging complete reports
Disk Drive: Built-in 3.5" floppy disk drive
Periphereals: connections for VGA display, PC-keyboard, parallel printer, RS232 interface
Power Consumption: 40 VA max.
Environment: 10 to 40°C (50 to 104°F); RH max 95%

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