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HI-931-02 Automatic Potentiometric Titration Systems (pH/mV/ISE)
HI-931-02 Automatic Potentiometric Titration Systems (pH/mV/ISE)

HI-931-02

The HI-931 automatic titrator is designed to perform a wide variety of potentiometric titrations with high accuracy and flexibility, allowing the user to obtain both accurate results and high-speed analysis.

pH
New Compact Design

Or call us today on 01525 850855 to make an appointment with one of our experts

Full Description Specification

The titrator can perform fixed endpoint or equivalence point titrations and direct measurements by measuring the pH/mV and temperature of the sample.

Reports and materials can be transferred to a PC via a USB interface, saved to a USB storage device or printed directly from the titrator. An external keyboard can also be attached for added convenience.

For a full demonstration, call today on 01525 850855 to make an appointment with our titration experts.

Main features at a glance:

  • Small footprint, requires minimal bench space
  • Casing made with strong, chemically resistant plastic
  • Flexible electrode holder supports up to 3 electrodes, 4 dispensing tubes, 1 temperature sensor and removable stirrer
  • Electrode holder positions electrodes in the centre of the beaker, allowing for smaller sample sizes
  • Integrated Peristaltic Pump available for reagent addition
  • Support for 100 titration methods and 30 autosampler sequences
  • User-customisable reports
  • Integrated research grade pH/mV/ISE meter
  • Clearly displayed warning and error messages

Titrator capabilities

Dynamic titrant dosing

The dynamic dosing feature allows for timely and accurate titration results by relating the titrant volume dosed to the mV response from the titration reaction. This provides for larger doses near the beginning of a titration and smaller, more precise doses near the titration endpoint.

Equivalence endpoint detection

Equivalence endpoint detection is critical in applications where fixed endpoints are not specified in standard methods. This endpoint indicates where the mV response from the titration is greatest with respect to the volume of titrant dosed.

Signal stability timing

The signal stability feature monitors when the mV response of the titration reaction stabilises before providing the next titrant dose. This ensures reliable measurement values throughout the length of a titration.

Multiple titration types

Paired with the right electrode from our sensor line, our potentiometric titrators can perform acid/base, redox (ORP), complexometric, precipitation, non-aqueous, argentometric, and ion selective titrations, as well as back titrations and titre determinations.

Direct measurement functionality

The HI-931 performs as a high accuracy pH, ORP, and ion selective meter that can link, log, and report direct measurements. Users can easily track and manage data without the hassle of manual record keeping.

Burettes and dosing system

Exchangeable burette system

With Hanna’s Clip-Lock™ burette feature, it only takes a few seconds to exchange titrants and reagents preventing cross-contamination and saving time.

Multiple burette sizes

The HI-931 comes supplied with a 25mL burette but may be equipped with a 5mL, 10mL or 50mL burette. Each burette is constructed with a ground glass syringe and chemically resistant PTFE plunger.

Precision dosing pump

Our unmatched 40,000 step piston driven pump is capable of dosing extremely small and highly accurate volumes of titrant or reagent.

Automatic reagent addition

A peristaltic pump or a second burette may be programmed to volumetrically dispense reagent prior to titration or direct measurement. This helps achieve consistent and accurate results and prevents operator errors such as incorrect volumes or forgetting reagent addition.

Redesigned electrode holder

  • Spring-loaded actuator allows you to quickly raise or lower the stirrer/electrodes with the push of a button
  • Space-saving geometry allows for sample sizes less than 50mL
  • Support rods mount directly to the titrator – no need for special mounting hardware

Peristaltic pumps

  • Add reagents to your samples automatically before every titration using integrated peristaltic pumps

Redesigned burette well

  • The burette well is sealed on the bottom to catch drips and spills

Methods of analysis

Customisable methods

These titrators can store up to 100 user-defined or standard titration and direct measurement methods. Each method may be modified and optimised for performance based on application and user requirements.

Titration method support

Onsite installation, training, and customisation is available from one of our product specialists. Hanna offers continued support for any questions you might have along the way.

Market specific methods packs

Hanna offers titration method packages for various markets including food, beverage, dairy, wine, and more.

Data Storage

Up to 100 titration and pH/mV/ISE reports. Transfer data via USB

.

Flexible GLP management

All necessary GLP (Good Laboratory Practice) information can be recorded with each sample.

Connectivity and functionality

Multifunctional

The titrators also function as a titrator, pH meter, mV/ORP meter, and ISE meter. Valuable laboratory bench space is saved, and multiple analyses can be performed on one sample.

Multiple Connections

The HI-931 offers support for one analog board to allow an electrode, up to two burettes, and a stirrer to be connected to one unit simultaneously.

Interface and display

Interactive colour display

A large, colour LCD screen clearly shows the chosen titration method along with results, units, titration volume, temperature, and mV or pH values.

Detailed titration graphs

A real-time titration curve can be displayed during each titration; this feature is useful when new methods are tested or when a procedure requires optimisation.

Fully customisable titration methods

Titration graphs

Titration graphs can be viewed on-screen or saved as images and transferred along with titration report.

Customisable reports

Data to be stored in titration reports is fully customisable.

Download software here FREE

Read More

pH
 Range-2.0 to 20.0 pH; -2.00 to 20.00 pH; -2.000 to 20.000 pH
 Resolution0.1; 0.01; 0.001 pH
 Accuracy (@25°C)±0.001 pH
pH Calibrationup to five-point calibration, eight standard buffers and five custom buffers
mV
 Range-2000.0 to 2000.0 mV
 Resolution0.1 mV
 Accuracy (@25°C)±0.1 mV
 mV Calibrationsingle point offset
ISE
 Range1•10-6 to 9.99•1010
 Resolution1; 0.1; 0.01
 Accuracy (@25°C)±0.5% monovalent; ±1% divalent
 ISE CalibrationUp to five-point calibration, seven standard solutions and five user-defined standards
Temperature
 Range-5.0 to 105.0°C
 Resolution0.1°C
 Accuracy (@25°C)±0.1°C excluding probe error
Additional Specifications
 Analog Board(s) capability1
 Dosing Pump Capability2
 Burette included1 (25mL)
 Burette Size Capability5, 10, 25 and 50 mL
 Burette Resolution1/40000
 Display Resolution0.001 mL
 Dosing Accuracy±0.1% of full burette volume
 Display14.9cm (5.7”) 320 x 240 pixel) backlit colour LCD
 GLP ConformityInstrumentation data storage and printing capabilities
 Power100-240 VAC
Ordering informationHI-931-02 includes titrator with one analog board*
All models also include: overhead propeller stirrer with stand, 25ml glass burette, dosing pump, temperature sensor, USB cable, USB Flash drive and PC Software.
Additional extras
 HI-930101Dosing pump with peristaltic pump
 HI-930100Dosing pump
 HI-93015050 mL burette assembly (includes syringe, aspiration, and dispensing tubes)
 HI-93012525 mL burette assembly (includes syringe, aspiration, and dispensing tubes)
 HI-93011010 mL burette assembly (includes syringe, aspiration, and dispensing tubes)
 HI-9301055 mL burette assembly (includes syringe, aspiration, and dispensing tubes)
*Each Analog board provides 1 BNC (pH, mV, ISE) input, 1 temperature input, 1 stirrer input.