Hanna Instruments HI 4522 pH/ISE and EC/TDS/resistivity/salinity meter

The Hanna Instruments HI 4522 is a research-grade, benchtop instrument that features eight measurement ranges: pH, ORP (oxidation reduction potential), ISE, conductivity, resistivity, TDS, salinity and temperature. The meter has dual channels and separate temperature input, and supports the external reference electrodes required by half-cell pH and ISE sensors.

The user interface is customisable and capable of displaying two channels at the same time, showing the measurements in various modes: basic measurement with or without GLP information, graph or logging data.

Clear tutorial messages and directions are available on-screen to quickly and easily guide users through all measurement and calibration procedures to ensure measurements and calibrations are performed properly.

Automatic, semiautomatic and manual pH calibration is available in up to five points, with eight standard and up to five custom buffers. The meter has Out of Calibration Range and Cal Due warnings.

ISE calibration is performed with up to five standard solutions or up to five custom solutions with or without temperature compensation. From the on-screen list, users can select their ISE electrode parameter along with its standard configuration profile or create their own.

Up to a four point automatic or custom standard conductivity calibration can be performed in up to four points as well as probe cell constant. One fixed point salinity calibration can be performed on the Percent Scale only. Three salinity ranges are available: practical scale, natural seawater scale and percentage scale.

Up to 10 profiles can be saved and recalled, eliminating the need to reconfigure each time a different probe is used.

Three selectable logging modes are available: automatic, manual and auto hold logging. Up to 100 logging lots with up to 10,000 records each can be stored for automatic or manual modes along with up to 200 USP reports and up to 100 ISE methods reports. Data can be transferred to a PC via the optoisolated RS232 or USB ports and HI 92000 software (optional).

HI 4522 is supplied with HI 76312 conductivity/TDS probe, HI 1131B pH electrode, HI 7662-T temperature probe, HI 70004 pH 4.01 buffer solution sachet, HI 70007 pH 7.01 buffer solution sachet, HI 700661 electrode cleaning solution sachet (2), HI 7071S electrolyte solution (30 mL), HI 76404N electrode holder, 12 VDC adapter and instructions.