Hanna-instruments HI 96710 Manual do Utilizador descarregar pdf (Página 19)

INTERFERENCES

Interference may be caused by:

Bromine

Iodine

Chlorine Dioxide

Ozone

Oxidized manganese and Chromium.

In case of water with hardness greater than 500 mg/L CaCO

, shake the sample for approxi-

mately 1 minute after adding the reagent.

In case of water with alkalinity greater than 250 mg/L CaCO

or acidity greater than 150 mg/L

CaCO

, the color of the sample could disappear or develop only partially. To resolve this,

neutralize the sample with diluted HCl or NaOH.

• Alternatively, wait for 2 minutes and 30

seconds and just press READ/ /TIMER.

In both cases, the lamp, cuvette and

detector icons will appear on the display,

depending on the measurement phase.

• The instrument directly displays the

concentration in mg/L of total chlorine on

the Liquid Crystal Display.

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Hanna-instruments HI 96710 Manual do Utilizador Página 19