Hanna-instruments HI 83200-01 Instrukcja Użytkownika Pobierz pdf (Strona 17)

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FREE CHLORINEFREE CHLORINE

FREE CHLORINE

SPECIFICATIONS

Range 0.00 to 2.50 mg/L

Resolution 0.01 mg/L

Accuracy ±0.03 mg/L ±3% of reading

Typical EMC ±0.01 mg/L

Deviation

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

Method Adaptation of the

EPA DPD method 330.5.

The reaction between free chlorine and the

DPD reagent causes a pink tint in the sample.

REQUIRED REAGENTS

POWDER:

Code Description Quantity

HI 93701-0 DPD 1 packet

LIQUID:

Code Description Quantity

HI 93701A-F DPD1 Indicator 3 drops

HI 93701B-F DPD1 Buffer 3 drops

REAGENT SETS

HI 93701-F Reagents for 300 tests (liquid)

HI 93701-01 Reagents for 100 tests (powder)

HI 93701-03 Reagents for 300 tests (powder)

For other accessories see page 128.

MEASUREMENT PROCEDURE

• Select the

Free Chlorine

method using the procedure described

in the

Method Selection

section (see page 12).

• Fill the cuvette with 10 mL of unreacted sample (up to the

mark) and replace the cap.

• Place the cuvette into the holder and close the lid.

Free Chlorine

FREE CHLORINE

10 mL

• Press TIMER or wait for 5 minutes, then invert

again the cuvette 10 times. Reinsert the cuvette

into the instrument.

• Press READ to start the reading. The instrument displays

the results in mg/L of Calcium.

Note: To ensure accurate results, perform the tests at room temperature, between 18°C and 28°C (65°F

to 83°F).

INTERFERENCES:

Interferences may be caused by:

Acidity (as CaCO

) above 1000 mg/L

Alkalinity (as CaCO

) above 1000 mg/L

Magnesium (Mg

) above 400 mg/L

• Replace the cap and invert several times to mix.

• Place the cuvette into the holder and close the lid.

• Press ZERO key. The display will show “-0.0-” when the

meter is zeroed and ready for measurement.

• Remove the cuvette.

• Using the 1 mL syringe, add exactly 1 mL of the

HI 93752B-0 Calcium Oxalate Reagent. Replace the

cap and invert the cuvette 10 times to mix.

Calcium

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