Hanna HI930 Standard Automatic Potentiometric Titrator

Hanna HI930 standard automatic potentiometric titrator

The Hanna HI930 is a benchtop automatic potentiometric titrator for standard titrations: standardisation, fixed pH or mV endpoints and equivalence-point detection. It combines a burette, stirrer, pH/mV input and temperature input in one 3.6 kg unit with a 5.7 inch colour display. Seven Star LLC is an independent supplier in Muscat and is not affiliated with the manufacturer.

The part number is the standard titrator; accessories such as burette size, electrodes and titrants are specified separately, so tell us the intended method when asking for a quotation.

HI930 technical specifications

How the HI930 works

A potentiometric titrator adds titrant from a precision burette while an electrode follows the sample potential. The HI930 monitors pH or mV, and for equivalence-point methods it locates the inflection of the curve using first or second derivative calculation; for fixed-endpoint methods it stops at a preset pH or mV value.

The burette resolution of 0.001 mL and the integrated stirrer, adjustable from 200 to 1400 RPM, keep dosing and mixing repeatable. Methods are stored in the instrument, up to 15 of them, and results can be saved as reports and moved by USB flash drive.

Where HI930 fits: sensors, accessories and related models

Beyond the titrator, a method needs the right electrode (BNC pH/ORP and a banana-socket reference option), a temperature sensor on the RCA input, titrant, standards and sample vessels. The electrode holder offers four multi-purpose slots for titrant tubes, four 12 mm electrode slots and a temperature sensor slot.

Smaller Hanna mini-titrators exist for single applications; the HI930 is the multi-method standard titrator.

HI930 family comparison

Because burette size sets accuracy (±0.005 mL on the 5 mL burette up to ±0.050 mL on the 50 mL), choose the smallest burette that comfortably holds the expected titrant volume.

Selection and ordering checklist for HI930

• Define the titration method: alkalinity, acidity, redox, chloride and so on, and the endpoint mode
• Choose burette size 5, 10, 25 or 50 mL according to titrant volume
• Confirm electrode type, reference option and temperature sensor
• Quote titrants, standards and reagents locally appropriate for the method
• Plan USB flash drive workflow for reports
• Check bench space and environment: 10 to 40 °C operation

Installation, calibration and maintenance of HI930

Install the burette, prime the titrant lines, fit the electrode and temperature sensor in the holder and confirm that stirring does not splash. Calibrate the pH electrode with fresh buffers before pH-based methods, and standardise titrants on a primary standard using the Standardisation analysis type.

Flush the burette and tubing when changing titrants, keep titrant bottles closed to avoid CO2 pick-up or evaporation, and inspect tubing for crystals and bubbles. Rinse the electrode between runs and verify with a known sample or check standard on a schedule.

Document each method with the titrant concentration, sample volume, stirrer speed and endpoint criterion, so that results are reproducible between operators and shifts. When a new titrant batch is opened, run the standardisation and store the factor before analysing production samples.

Never leave strong titrants in the lines for long periods. At the end of the week, rinse with deionised water or a suitable solvent as appropriate for the titrant, and store the electrode in the recommended solution.

Typical applications of HI930 in Oman and the GCC

In Oman and the GCC, laboratories use standard titrators for water alkalinity and hardness, acidity and caustic strength of process liquors, chloride and salt content, redox titrations in chemical plants and quality checks in food and beverage production. Desalination and power-plant laboratories rely on titration for routine wet chemistry that supports corrosion and scaling control.

Because methods and reports are stored on the instrument and exported by flash drive, a laboratory manager can audit results without connecting the titrator to a network.

Information to send with an RFQ for HI930

• Titration method(s) and sample type
• Burette size(s) required
• Electrodes, temperature sensor and accessories
• Titrants and standards needed
• Delivery location and lead time
• Project or tender reference

Storage, handling and spares for the Hanna HI930

Store the Hanna HI930 in its case in a clean, dry place. Keep probes, electrodes and reagents as described in the user manual, as many of them need a storage solution or have a limited shelf life. In the GCC climate, keep reagents away from heat and direct sun and check expiry dates before use.

• Calibrate the instrument with fresh standards at the interval your procedure requires.
• Rinse probes and sample cells after each use and inspect them for scratches or deposits.
• Keep spare consumables, such as reagents, standards, cuvettes and electrode solutions, in stock.
• Record calibration results so that drift or probe ageing can be seen early.

When you order the Hanna HI930, list the consumables and standards you need in the same RFQ, so the instrument can be used from the day it arrives.

Documents and quotation

The instruction manual for the HI930 is attached on this page for specifications, calibration procedures and maintenance steps.

Send the part number HI930, the quantity and your delivery location and we will reply with availability and a quotation.