Hanna Instruments HI 83099 - Manual (Page 42)

83 82 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.
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.