Hanna-instruments HI 83200 Manual de usuario descargar pdf (Pagina 42)

82 83 Nickel LR

NICKEL LOW RANGE

SPECIFICATIONS

Range 0.000 to 1.000 mg/L

Resolution 0.001 mg/L

Accuracy ±0.010 mg/L ±7% of reading at 25 °C

Typical EMC ±0.001 mg/L

Deviation

Light Source Tungsten lamp with narrow band interference filter @ 575 nm

Method Adaptation of the PAN method. The reaction between nickel and the reagents causes

an orange tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93740A-0 Phthalate-phosphate 2 packets

HI 93740B-0 0.3% PAN indicator 2 mL

HI 93740C-0 EDTA 2 packets

HI 93703-51 Dispersing Agent 4-6 drops (only when necessary, see note)

REAGENT SETS

HI 93740-01 Reagents for 50 tests

HI 93740-03 Reagents for 150 tests

For other accessories see page 124.

MEASUREMENT PROCEDURE

• Select the

Nickel LR

method using the procedure

described in the

Method Selection

section (see page 12).

Note: for best results perform your tests between 20-24°C.

• Fill one graduated beaker with 25 mL of deionized

water (blank) and another one with 25 mL of sample.

• Add the content of one packet of HI 93740A-0

Phthalate-phosphate reagent to each beaker. Cap

and swirl gently until the reagent is dissolved.

Note: If sample contains iron (Fe

), it is important

that all powder be dissolved completely before continuing

with following step.

• Add 1 mL of HI 93740B-0 0.3% PAN solution to each

beaker, cap and swirl to mix.

Nickel HR

• Remove the cuvette and add the content of one packet of

HI 93726-0 reagent. Replace the cap and shake gently

until completely dissolved.

• Reinsert the cuvette into the instrument.

• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait

for 1 minute and press Read. When the timer ends the meter will perform the reading.

• The instrument displays concentration in g/L of nickel.

INTERFERENCES

Interference may be caused by copper.

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