User Manual

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Nickel LR
• Press Timer and the display will show a countdown prior to adding reagent C or, alternatively, wait
for 15 minutes. Add one packet of HI 93740C-0 EDTA reagent to each beaker, cap and swirl to mix
until completely dissolved.
• Fill one cuvette up to the mark with 10 mL of the blank.
• Place the cuvette into the holder and close the lid.
• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for
measurement.
• Fill a second cuvette up to the mark with 10 mL of the reacted sample.
• Insert the second cuvette into the instrument.
• Press Read to start the reading. The instrument displays the results in mg/L of nickel.
Note: a temperature above 30°C may cause turbidity. In this case, before zeroing and taking
readings, add 2-3 drops of Dispersing Agent (HI 93703-51) to each cuvette and swirl until turbidity
is removed.
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 128.
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.
10 mL
10 mL