Hanna-instruments HI 83200-01 Manual de usuario descargar pdf (Pagina 16)

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• Remove the cuvette and add the content of one packet of HI 93716-0

DPD reagent. Replace the cap and shake gently for about 20 seconds to

dissolve most of the reagent.

• 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 bromine.

INTERFERENCES

Interference may be caused by: Chlorine, Iodine, Ozone, Oxidized forms of Chromium and Manganese.

In case of water with hardness greater than 500 mg/L CaCO

, shake the sample for approximately 2

minutes after adding the reagent.

In case of water with alkalinity greater than 250 mg/L CaCO

or acidity greater than 150 mg/L CaCO

the color of the sample may develop only partially, or may rapidly fade. To resolve this, neutralize the

sample with diluted HCl or NaOH.

CALCIUM

SPECIFICATIONS

Range 0 to 400 mg/L

Resolution 10 mg/L

Accuracy ±10 mg/L ±5% of reading

Light Source Tungsten lamp with narrow band interference filter @ 466 nm

Method Adaptation of the Oxalate method.

REQUIRED REAGENTS

Code Description Quantity

- Buffer Reagent 4 drops

HI 93752A-0 Ca Calcium Buffer Reagent 7 mL

HI 93752

B-0 Ca Calcium Oxalate Reagent 1 mL

REAGENT SETS

HI 937521-01 Reagents for 50 tests

HI 937521-03 Reagents for 150 tests

For other accessories see page 128.

MEASUREMENT PROCEDURE

Note: for sample preparation follow the IRRIGATION WATER (LR) procedure at page 17.

• Select the

Calcium

method using the procedure described in the

Method Selection

section (see page 12).

• Using the 5 mL syringe add exactly 3.00 mL of sample to the cuvette.

• Add 4 drops of Buffer Reagent.

• Use the pipette to fill the cuvette up to the 10 mL mark with

the HI 93752A-0 Calcium Buffer Reagent.

Calcium

3 mL of sample

Bromine

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 66 67

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