Hanna Instruments HI83300 Instruction Manual page 112

• Press Timer and the display will show the countdown prior to the measurement or, alternatively,
wait for 30 seconds and press Read. When the timer ends the meter will perform the reading.
The instrument displays concentration in mg/L of iron (Fe).
INTERFERENCES
Interference may be caused by:
Cadmium above 4.0 mg/L
Chromium above 0.25 mg/L
3+
Chromium above 1.2 mg/L
6+
Cobalt above 0.05 mg/L
Copper above 0.6 mg/L
Cyanide above 2.8 mg/L
Manganese above 50.0 mg/L
Mercury above 0.4 mg/L
Molybdenum above 4.0 mg/L
Nickel above 1.0 mg/L
Nitrite ion above 0.8 mg/L
Sample pH should be between 3 and 4 to avoid fading of the developed to fade or turbidity
formation.
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