Hanna-instruments HI 83225 Instrukcja Użytkownika Pobierz pdf (Strona 27)

• Remove the cuvette.

• Add 4 drops of HI 93715A-0 First Reagent (6 drops for seawater

analysis). Replace the cap and mix the solution by inverting the

cuvette a couple of times.

• Add 4 drops of HI 93715B-0 Second Reagent (10 drops for seawater

analysis). Replace the cap and mix the solution by inverting the

cuvette a couple of times.

• Reinsert the cuvette into the instrument.

• Press Timer and the display will show the countdown prior to the

measurement or, alternatively, wait for 3 minutes and 30 seconds

and press Read. When the timer ends the meter will perform the

reading. The instrument displays the results in mg/L of ammonia

nitrogen (NH

-N).

• Press or to access the second level functions.

• Press the Chem Frm key to convert the result in mg/L of ammonia (NH

) and ammonium (NH

• Press or to return to the measurement screen.

INTERFERENCES

Interference may be caused by:

acetone, alcohols, aldehydes, glycine, hardness above 1 g/L, iron, organic chloramines, sulfide, various

aliphatic and aromatic amines.

Ammonia MR

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Hanna-instruments HI 83225 Instrukcja Użytkownika Strona 27