Hanna-instruments HI 95715 Manuel d'utilisateur télécharger pdf (Page 14)

• Replace the cuvet into the holder and ensure

that the notch on the cap is positioned securely

into the groove.

• Hold READ/TIMER for three seconds. The

display will show the countdown prior to

measurement.

Alternatively, wait for 3 minutes and 30 seconds

and just press READ/TIMER.

In both cases “SIP” will blink during

measurement.

• The instrument directly displays concentration

in mg/L of ammonia nitrogen (NH

-N) on the

Liquid Crystal Display.

• To convert the reading to mg/L of ammonia

(NH

), multiply by a factor of 1.216.

INTERFERENCES

• Organic compounds like: chloramines, various aliphatic and aromatic amines, glycine,

(positive error).

To eliminate these interferences distillation is required.

• Organic compounds like: aldehydes, alcohols (e.g. ethanol) or acetone (negative error).

To eliminate these interferences distillation is required.

• Sulfide (S

): may cause turbidity.

• Hardness above 1 g/L as Calcium Carbonate (CaCO

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Hanna-instruments HI 95715 Manuel d'utilisateur Page 14