Hanna-instruments HI 83214 Manual do Utilizador descarregar pdf (Página 64)

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Phosphorus, Total HR

• Select the

Phosphorus,

Total High Range

method following one of the procedures described in the

“Method Selection” section (see page 15).

• Remove the cap from the vials and add exactly 2.0 mL of Sodium Hydroxide (NaOH) Solution 1,54 N

to each vial, while keeping the vials at a 45-degree angle. Replace the cap tightly and mix by

inverting the vials a couple of times.

• Remove the cap from the vials and add exactly 0.5 mL of HI 93763B-0 Molybdovanadate Reagent

to each vial, while keeping the vial at a 45-degree angle. Replace the cap tightly and mix by

inverting the vials a couple of times.

• Place the blank vial into the holder and push it completely down.

• Press

Timer and the display will show the countdown prior to the measurement and the “Reaction

Time” message. Alternatively, wait for 7 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.

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Hanna-instruments HI 83214 Manual do Utilizador Página 64