17
• Pay attention to the selected range.
To change the range, simply press
RANGE/GLP/ .
• Fill the cuvet with 10 mL of unreacted
sample, up to the mark, and replace the
cap.
• Place the cuvet into the cuvet holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO/CFM and the lamp, cuvet and
detector icons will appear on the display,
depending on the measurement phase.
INTERFERENCES
Bromine (positive error) Oxidized Manganese and Chromium (positive error)
Chlorine dioxide (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.
• When the beeper sounds briefly and the
LCD displays dashes, the meter is ready.
The blinking “ZERO” indicates that the
instrument needs to be zeroed first.
• Turn the meter on by pressing ON/OFF.
The display briefly shows all tags on.
MEASUREMENT PROCEDURE FOR CHLORINE ULTRA HIGH RANGE (P2)
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