mV Range
-2000.0 to 2000.0 mV
mV Calibration
single point offset
pH Range
-2.000 to 20.000 pH; -2.00 to 20.00 pH; -2.0 to 20.0 pH
pH Resolution
0.001 pH; 0.01 pH; 0.1 pH
pH Calibration
up to five-point calibration, eight standard buffers and five custom buffers
pH Temperature Compensation
automatic from -5.0 to 105.0C; 23.0 to 221.0F
ISE Range
1 x 10?6 to 9.99 x 10 concentration
ISE Resolution
1; 0.1; 0.01 concentration
ISE Accuracy
0.5% (monovalent ions); 1% (divalent ions)
ISE Calibration
automatic, 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 105.0C; 23.0 to 221.0F; 268.2 to 378.2K
Temperature Resolution
0.1C; 0.1F; 0.1K
Temperature Accuracy
0.1C; 0.2F; 0.1K, excluding probe error
Potentiometric Titrations
acid/base (pH or mV-mode), redox, precipitation, complexometric, non-aqueous, ion-selective, argentometric
Analog Boards Capability
one analog board for pH/ORP/ISE; not upgradeable
Measurement Units
user-specified expression of concentration units to suit specific calculation requirements
Endpoint Criteria
single equivalence point (1st or 2nd derivative) or fixed pH/mV value
Dosing Pump Capability
one included can be upgraded for two
Flow Rate
user-selectable from 0.1 mL/min to 2 x burette volume/min
Dosing Accuracy
0.1% of full burette volume
Burette
one 25 mL burette included
Burette Size Capability
5, 10, 25, and 50 mL (auto-detection)
Dosing Pump Resolution
1/40000
Stirrer Type
overhead propeller type, 200 to 2500 rpm, resolution 100 rpm
Titrator Methods
up to 100 methods (standard and user-defined)
Real Time & Stored Graphs
mV-volume or pH-volume titration curve, 1st derivative curve or 2nd derivative curve; pH mode, mV mode or ISE mode
GLP Conformity
instrumentation data storage and printing capabilities
Autosampler Compatible
not available
Logging Memory
up to 100 titration and pH/mV/ISE reports
Display
5.7 (320 x 240 pixel) backlit color LCD
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
Ordering Information
Each 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.