Lovibond MD100 Mode D'emploi page 67

Methods
GB
Zero
Test
CL6
RESULT
Zero
Test
CL6
RESULT
Zero
!
Test
CL6
RESULT
MD100_7 12/2016
Place the vial in the sample chamber making sure that the
are aligned.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 3 seconds.
The result 1 is shown in the display.
Remove the vial from the sample chamber and rinse vial and cap several
times. Fill the vial with a few drops of water sample.
Add one DPD No. 1 tablet straight from the foil 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
are aligned.
Press the [ZERO/TEST] key.
The method symbol flashes for approx. 3 seconds.
The result 2 is shown in the display.
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
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 3 is shown in the display.
mg/l Chlorine dioxide = result 1 x 1.9
mg/l free Chlorine = result 2 – result 1
combined Chlorine = result 3 – result 2
total Chlorine = free Chlorine + combined Chlorine
marks
marks
marks
67