Hanna-instruments HI 83203 Manual de usuario descargar pdf (Pagina 21)

Free Chlorine

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

• Remove the cuvette.

Powder reagents procedure

• Add the content of one packet of HI 93701-0 DPD reagent.

Replace the cap and shake gently for 20 seconds (or 2 minutes for

seawater analysis).

• Reinsert the cuvette into the instrument.

• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait

for 1 minute and press Read. When the timer ends the meter will perform the reading. The instrument

displays the results in mg/L of free chlorine.

Liquid reagents procedure

• To an empty cuvette add 3 drops of HI 93701A-F DPD1

indicator and 3 drops of HI 93701B-F DPD1 buffer. Swirl

gently to mix, and immediately add 10 mL of unreacted

sample. Replace the cap and shake gently again.

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Hanna-instruments HI 83203 Manual de usuario Pagina 21