41
WT.050.311.000.DM.IM.0119
P7
Advanced
Methods
English
RESULT
RESULT
Chlorine with Tablet
0.01 – 6.0 mg/l
a) free Chlorine
Fill a clean vial (24 mm Ø) with
10 ml of the water sample
and
perform zero calibration (see “Operation”).
Remove the vial from the sample chamber and
empty it, leaving a
few drops remaining in the vial.
Add
one DPD No. 1 tablet
straight from the foil to the water sample
and crush the tablet using a clean stirring rod.
Add the water sample to the 10 ml mark.
Close the vial tightly with the cap and swirl gently several times until
the tablet is dissolved.
Place the vial in the sample chamber making sure that the marks
are aligned.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l free Chlorine.
b) total Chlorine
Add
one DPD No. 3 tablet
straight from the foil to the same water
sample and crush the tablet using a clean stirring rod.
Close the vial tightly with the cap and swirl gently several times until
the tablet is dissolved.
Place the vial in the sample chamber making sure that the marks
are aligned.
Wait for a reaction period of 2 minutes.
(Countdown can be activated, see page 37)
The method symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l total Chlorine.
c) combined Chlorine
combined Chlorine = total Chlorine – free Chlorine
0.0.0
!
Zero
Test
Zero
Test
CL
CL
CL
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