Hanna-instruments HI 83203 Manuale Utente Scaricare il pdf (Pagina 24)

Total 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 1 packet of HI 93711-0 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 2 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 total

chlorine.

Liquid reagents procedure

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

DPD1 indicator, 3 drops of HI 93701B-T DPD1 buffer

and 1 drop of HI 93701C DPD3 solution. Swirl gently

to mix and immediately add 10 mL of unreacted

sample. Replace the cap and shake gently again.

• Reinsert the cuvette into the instrument.

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Hanna-instruments HI 83203 Manuale Utente Pagina 24