Calibration Procedure
The meter should be calibrated with free chlorine standards. The calibration should be
done with a distilled or deionized water blank and one chlorine standard of known
concentration. The concentration of the calibration standard should be similar to the
expected concentration of samples that will be tested. The default reagent system is
DPD Tablets.
TABLETS (Tablet calibration should be selected in the Options menu)
1. Press *IOK to turn the meter on.
1.3
2. Press *IOK to select Measure. Main Menu
* Measure
Data
Options
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3. Scroll down and then press *IOK
to select Chlorine.
Measure
Turbidity
Color
* Chlorine
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4. Press *IOK to select Test Free
Chlorine.
Chlorine (T)
* Test Free
Test Total
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5. Rinse a clean tube (0290) with the
chlorine standard. Fill the tube to
the 10 mL line with the sample
water. Dry the tube with a lint-free
cloth. Put on a dry positioning ring.
Cap the tube.
CALIBRATION & ANALYSIS • CHLORINE 61
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