Hanna Instruments HI 83200C - Manual (Page 62)

122 123 Zinc
• Place the cap and insert the cuvette into the instrument
and close the lid.
• Press the Zero key. The display will show “-0.0-” when
the meter is zeroed and ready for measurement.
• Remove the cuvette and add 0.5 mL of HI 93731B-0
Cyclohexanone to the cuvette.
Note: To prevent any contamination from the polycarbonate
cap, prior to replacing it, close the sample cuvette with
the supplied HDPE plastic stopper.
• Replace the cap and mix the sample for 15 seconds.
• Insert the sample into the instrument.
• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait
for 3 minutes and 30 seconds and press Read. When the timer ends the meter will perform the
reading.
• The instrument displays the results in mg/L of zinc.
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 93731 A-0 Zinc Reagent 1 packet
HI 93731 B-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 128.
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