Hanna Instruments HI 96101 - Manual (Page 24)

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• Alternatively, wait for 2 minutes and 30
seconds then just press READ/ /TIMER.
In both cases, the lamp, cuvette and
detector icons will appear on the display,
depending on the measurement phase.
• At the end of measurement, the instrument
directly displays concentration in mg/L of
iodine on the LCD.
INTERFERENCES
Bromine
Chlorine
Ozone
Oxidized forms of chromium and manganese
In case of water with alkalinity greater than 250 mg/L CaCO
3
or acidity greater than 150 mg/L
CaCO
3
, the color of the sample could disappear or develop only partially. To resolve this,
neutralize the sample with diluted HCl or NaOH.
In case of water with hardness greater than 500 mg/L CaCO
3
, shake the sample for approximately
2 minutes after adding the reagent.
BROMINE MEASUREMENT
• Fill the cuvette with 10 mL of unreacted
sample, up to the mark, and replace the
cap.
• Place the cuvette into the cuvette holder
and ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO/CFM and the lamp, cuvette
and detector icons will appear on the
display, depending on the measurement
phase.
• After a few seconds, the display will
show “-0.0-”. The meter is now zeroed
and ready for measurement.