Hanna Instruments HI 96101 - Manual (Page 27)

27
• Place the cuvette into the cuvette holder and
ensure that the notch on the cap is positioned
securely into the groove.
• Press and hold READ/ /TIMER for three
seconds. The display will show the countdown
prior to measurement. An audible “beep”
indicates the end of the countdown period.
• Alternatively, wait for 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
iron LR on the LCD.
INTERFERENCES
Interference may be caused by:
Cadmium above 4.0 mg/L; Chromium
3+ above 0.25 mg/L; Chromium 6+ above 1.2 mg/L;
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 developed color to fade or turbidity formation.