GB
Methods
Ozone with Tablet
0.02 – 2 mg/l O
3
a) in absence of 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 and one DPD No. 3 tablet straight from
the foil and crush the tablets using a clean stirring rod.
Add water sample to the 10 ml mark.
Close the vial tightly with the cap and swirl several times until the
tablets are 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 57)
The method symbol flashes for approx. 3 seconds.
The result is shown in the display as Ozone.
b) in presence of 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 and one DPD No. 3 tablet straight from
the foil and crush the tablets using a clean stirring rod.
Add water sample to the 10 ml mark.
Close the vial tightly with the cap and swirl several times until the
tablets are 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 57)
The method symbol flashes for approx. 3 seconds.
The result 1 is shown in the display.
Remove the vial from the sample chamber and empty the vial. Rinse
vial and cap several times.
Fill a second clean 24 mm vial with 10 ml water sample.
Add one GLYCINE tablet straight from the foil to the water sample
and crush the tablet using a clean stirring rod.
0.0.0
O3
!
Zero
Test
O3
0.0.0
!
Zero
Test
O3
RESULT
RESULT
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