Hanna Instruments HI 83226-01 - Manual (Page 16)

30 31 Total Chlorine
• Press the Zero key. The meter will show “-0.0-” when the meter is zeroed and ready for measurement.
• Remove the cuvette.
• Add 1 packet of HI 93711-0 DPD reagent. Replace the
cap and shake gently for 20 seconds.
• Reinsert the cuvette into the instrument.
• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait
for 2 minutes and 30 seconds and press Read. When the timer ends the meter will perform the
reading.
INTERFERENCES
Interference may be caused by: Bromine, Chlorine Dioxide, Iodine, Ozone (all these interferences give positive errors).
Alkalinity above 250 mg/L CaCO
3
will not reliably develop the full amount of color or it may rapidly fade.
To resolve this, neutralize the sample with diluted HCl.
In case of water with hardness greater than 500 mg/L CaCO
3
, shake the sample for approximately
2 minutes after adding the powder reagent.
• The instrument displays the results in mg/L of total chlorine.
SPECIFICATIONS
Range 0.00 to 5.00 mg/L
Resolution 0.01 mg/L
Accuracy ±0.02 mg/L ±4% 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 EPA method. The reaction between copper and the bicinchoninate
reagent causes a purple tint in the sample.
REQUIRED REAGENTS
Code Description Quantity/test
HI 93702-0 Bicinchoninate 1 packet
REAGENT SETS
HI 93702-01 Reagents for 100 tests
HI 93702-03 Reagents for 300 tests
For other accessories see page 46.
MEASUREMENT PROCEDURE
• Select the Free Copper method using the procedure described in
the Method Selection section (see page 15).
• Fill the cuvette with 10 mL of unreacted sample (up to the mark)
and replace the cap.
• Place the cuvette into the holder and close the lid.
• Press the Zero key. The meter will show “-0.0-” when the meter is zeroed and ready for measurement.
FREE COPPER
Free Copper
10 mL