127
Zinc
ZINC
SPECIFICATIONS
Range 0.00 to 3.00 mg/L
Resolution 0.01 mg/L
Accuracy ±0.03 mg/L ±3% of reading at 25 °C
Typical EMC ±0.01 mg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter @ 575 nm
Method Adaptation of the
Standard Methods for the Examination of Water and Wastewater,
18
th
edition,
Zincon method. The reaction between zinc and the reagents causes an
orange to a dark violet tint in the sample.
REQUIRED REAGENT
Code Description Quantity
HI 93731A-0 Zinc Reagent 1 packet
HI 93731B-0 Cyclohexanone 0.5 mL
REAGENT SETS
HI 93731-01 Reagents for 100 tests
HI 93731-03 Reagents for 300 tests
For other accessories see page 132.
MEASUREMENT PROCEDURE
• Select the
Zinc
method using the procedure described in
the
Method Selection
section (see page 12).
• Fill one graduated mixing cylinder up to the 20 mL mark
with the sample.
• Add the content of one packet of HI 93731A-0 Zinc
reagent, close the cylinder and invert several times to mix
until completely dissolved.
• Fill one cuvette with 10 mL of the reacted sample up to
the mark.
20 mL
10 mL
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