Hanna-instruments HI 83200 Manual do Utilizador descarregar pdf (Página 43)

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INTERFERENCES

Interference may be caused by:

must not be present

above 32 mg/L

above 1000 mg/L (as CaCO

)

above 20 mg/L

Cl¯ above 8000 mg/L

above 20 mg/L

above 40 mg/L

above 15 mg/L

F¯ above 20 mg/L

above 10 mg/L

above 500 mg/L

above 400 mg/L

above 25 mg/L

above 60 mg/L

above 5000 mg/L

above 20 mg/L

above 30 mg/L

Nickel LR

• Press Timer and the display will show a countdown prior to adding reagent C or, alternatively, wait

for 15 minutes. Add one packet of HI 93740C-0 EDTA reagent to each beaker, cap and swirl to mix

until completely dissolved.

• Fill one cuvette up to the mark with 10 mL of the blank.

• Place the cuvette into the holder and close the lid.

• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for

measurement.

• Fill a second cuvette up to the mark with 10 mL of the reacted sample.

• Insert the second cuvette into the instrument.

• Press Read to start the reading. The instrument displays the results in mg/L of nickel.

Note: a temperature above 30°C may cause turbidity. In this case, before zeroing and taking

readings, add 2-3 drops of Dispersing Agent (HI 93703-51) to each cuvette and swirl until turbidity

is removed.

10 mL

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Hanna-instruments HI 83200 Manual do Utilizador Página 43