Hanna-instruments HI 83214 Manual do Utilizador descarregar pdf (Página 24)

CHLORINE, FREE

Chlorine, Free

10 mL

SPECIFICATIONS

Range 0.00 to 5.00 mg/L Cl

Resolution 0.01 mg/L

Accuracy ±0.03 mg/L or ±4 % of reading @ 25 °C, whichever is greater

Light Source Tungsten lamp with narrow band interference filter @ 525 nm

Method Adaptation of the EPA method 330.5 and

Standard Methods for the Examination of

Water and Wastewater, 20

edition

, 4500-Cl G, DPD method. The reaction between

free chlorine and the DPD reagent causes a pink tint in the sample.

REQUIRED REAGENTS

Code Description Q.ty/test

HI 93701-0 DPD Powder Reagent 1 packet

REAGENT SETS

HI 93701-01 Reagents for 100 tests

HI 93701-03 Reagents for 300 tests

For other accessories see page 68.

MEASUREMENT PROCEDURE

• Select Chlorine, Free method following one of the procedures described in the “Method Selection”

section (see page 15).

• Take an empty vial.

• Fill the vial with 10 mL of unreacted sample, then replace the cap. This is the blank.

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

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

measurement.

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Hanna-instruments HI 83214 Manual do Utilizador Página 24