Hanna-instruments HI 83214 Manual do Utilizador descarregar pdf (Página 39)

• Press Start and the display will show the countdown prior to the measurement and the ”Reaction

Time” message. Alternatively, wait for 5 minutes and press Zero.

• The instrument will perform a zero sequence and after a few seconds the display will show

“-0.0-”. Now the meter is zeroed and ready for measurement.

• Remove the blank vial and place the sample vial into the holder and push it completely down.

• Press Read. The instrument will perform the reading. The instrument displays the concentration in

mg/L of total nitrogen (N).

• Press s or t to convert the result in mg/L of ammonia (NH

) or mg/L of nitrate (NO

The method detects all organic and inorganic forms of nitrogen present in the sample.

INTERFERENCES

Interference may be caused by:

Bromide (Br

) above 240 mg/L

Chloride (Cl

) above 3000 mg/L

Chromium (Cr

) above 0.5 mg/L

Nitrogen, Total HR

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 71 72

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Hanna-instruments HI 83214 Manual do Utilizador Página 39