Hanna Instruments HI 83099 User Manual

Page 42

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 93740

A-0

Phthalate-phosphate

2 packets

HI 93740

B-0

0.3% PAN indicator

2 mL

HI 93740

C-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 132.

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.