MULTIPARAMETER WATER QUALITY METER
The HI931 Automatic Titrator is the answer to your dedicated titration needs. Fully customizable, the HI931 delivers accurate results and intuitive user experience, all in a compact package. Titrate for a variety of measurements at the push of a button including acids, bases, redox, and selective ions. With no additional programming upgrades to purchase, you can start measuring right away.
Small footprint so you can fully optimize your benchtop and increase productivity.
Unmatched 40,000-step dosing pump for small volumes of titrant to help you achieve a very precise endpoint for greater consistency.
Perfect for dedicated titration needs.
Specifications
pH Range -2.000 to 20.000 pH
pH Resolution 0.1; 0.01; 0.001 pH
pH Accuracy (@25ºC/77ºF) ±0.001 pH
pH Calibration up to five-point calibration, eight standard buffers and five custom buffers
mV Specifications
mV Range -2000.0 to 2000.0 mV
mV Resolution 0.1 mV
mV Accuracy (@25ºC/77ºF) ±0.1 mV
mV Calibration single-point offset
ISE Specifications
ISE Range 1•10⁻⁶ to 9.99•10¹⁰
ISE Resolution 1; 0.1; 0.01
ISE Accuracy ± 0.001 pH
ISE Calibration up to five-point calibration, seven standard solutions and five user-defined standards
Temperature Specifications
Temperature Range -5.0 to 105.0°C; 23.0 to 221.0°F; 268.2 to 378.2K
Temperature Resolution 0.1°C; 0.1°F; 0.1K
Temperature Accuracy (@25ºC/77ºF) ±0.1°C; ±0.2°F; ±0.1K, excluding probe error
Additional Specifications
Programmable Stirrer overhead propeller type, 200 to 2500 rpm, resolution 100 rpm
Display 5.7” (320 x 240 pixel) backlit color LCD
Burette Sizes 5, 10, 25, and 50 mL
Burette Resolution 1/40000
Display Resolution 0.001 mL
Dosing Accuracy ±0.1% of full burette volume
Methods up to 100 methods (standard and user-defined)
Logging Data up to 100 titration and pH/mV/ISE reports
Burette Auto-Detection burette size is automatically recognized when inserted into the unit
Flow Rate user-selectable from 0.1 mL/min to 2 x burette volume/min
Endpoint Determination single equivalence point (1st or 2nd derivative) or fixed pH/mV value
Potentiometric Titrations acid/base (pH or mV-mode), redox, precipitation, complexometric, non-aqueous, ion-selective, argentometric
Measurement Units user-specified expression of concentration units to suit specific calculation requirements
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: pH/mV/concentration versus time
USB Host (Side) flash drive compatibility for transfer of methods and reports
GLP Conformity instrumentation data storage and printing capabilities
Languages English, Portuguese, Spanish
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
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 Sensor, Shorting Cap, Power Adapter, USB Cable, Instruction Manual, USB Memory Stick, HI900 PC Application (Installation Kit on USB Stick), and Quality Certificate.
