17
Bromine (positive error)
Ozone (positive error)
Iodine (positive error)
Alkalinity above 250 mg/L CaCO
3
or acidity above 150 mg/L CaCO
3
will not reliably develop the
full amount of color or it may rapidly fade. 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 powder reagent.
MEASUREMENT PROCEDURE
Oxidized Manganese and Chromium (positive error)
Chlorine dioxide (positive error)
INTERFERENCES
• Press and hold
READ /TIMER
for three seconds. The display will show the countdown prior
to measurement. The beeper is playing a beep at the end of countdown period.
Alternatively, wait for 1 minute and 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 free
chlorine on the LCD.
3''
