Hanna-instruments HI 83746 Uživatelský manuál Strana 8

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After a few seconds the display will show “-0.0-”.
The meter is now zeroed and ready for measurement.
Remove the Blank Vial.
Insert the Sample Vial into the instrument.
Note: Do not shake or invert the Sample Vial
anymore otherwise the samples may become turbid.
Press READ and the display will show “----” during
measurement.
The instrument directly displays concentration in g/L
(ppt) of Reducing Sugars on the Liquid Crystal Display.
Sample
Insert the vials into the reactor and heat them for 7
minutes at 105°C.
Note: to obtain most accurate results, it is
recommended to use the pre-programmed timer of
the instrument, and remove the vials from the reactor
after exactly 7 minutes.
Turn the meter on by pressing ON/OFF and then
press TIMER to activate a 7 minutes countdown.
At the end of the digestion period switch off the reactor,
place the vials carefully in the test tube rack and wait
for 10 minutes.
Warning: as the vials are still hot, be careful in
handling them.
Invert the vials two times to mix. Then wait for 30
minutes to allow the vials cool to room temperature.
Note: This operation is necessary to recover the
condensed water after heating.
Turn the instrument ON by pressing ON/OFF. When the
LCD displays “---”, it is ready.
Place the Blank Vial into the instrument.
Press ZERO and “----” will blink on the display.
Blank
Note
To convert the Reducing Sugars concentration from g/L to %, multiply the reading by 0.1.
e.g. 12.5g/L x 0.1=1.25%.
To calculate the potential alcohol degree multiply the read sugar concentration (g/L)
by 0.06.
e.g. 175g/L x 0.06=10.5% vol (potential alcohol degree)
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