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 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
3+
), 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.