General Description & Intended Use - Hanna Instruments HI84529 Instruction Manual

3. GENERAL DESCRIPTION & INTENDED USE
The HI84529 is an affordable, easy to use, microprocessor-based automatic mini titrator and pH
meter designed for the rapid and accurate analysis of Total Titratable Acidity in Dairy Products.
The HI84529 will quickly become a valuable tool by eliminating subjective factors including color
indicators, errors in calculations or erratic titrant additions.
The instrument benefits from Hanna Instruments' many years of experience as a manufacturer of
quality analytical instrumentation. A clear and well-designed user interface makes the instrument
intuitive and simple to use.
By pressing the Start key in Titrator mode, the instrument will automatically titrate the sample to the
set endpoint, perform all necessary calculations and display the results in the selected unit. At the end
of the titration, another titration can be started by pressing the Restart key.
A dedicated HELP key aids in setup, calibration and troubleshooting.
Other features:
• pH meter / mV meter
• Stir speed control
• Graphic mode to display the titration data
• Data can be stored using the log feature and then exported to a USB stick or transferred to a PC
using the USB connection
• Log on demand for up to 400 samples (200 mV/pH measurements; 200 for titration results)
• GLP feature, to view calibration data for the pH electrode and pump
Significance of Use
Titratable acidity can be expressed in several units; % lactic acid (% l.a.), degree Soxhlet Henkel
(°SH), degree Dornic (°D) or degree Thörner (°TH). Each of these units corresponds to a specific
procedure used to titrate dairy products.
Soxhlet Henkel degrees (°SH)
Thörner degrees (°Th)
Dornic degrees (°D)
Percent lactic acid (%l.a.)
mostly used in Central Europe exept France and the Netherlands.
This value is a number of mL of 0.25N NaOH used for titration of
100 mL milk, using phenolphtalein as indicator.
mostly used in Sweden and the CIS. This value is obtained by
titrating 100 mL of milk, diluted with 2 parts of distilled water,
with 0.1N NaOH, using phenolphtalein as indicator
mostly used in Netherlands and France. This value is obtained
by titrating 100 mL of milk, with N/9 (0.11 N) NaOH, using
phenolphtalein as indicator.
frequently used in the UK, USA, Canada, Australia and New
Zealand This value is obtained in the same way as °D, dividing
the result by 100.
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