Camlab Lovibond MD 610, Instruction Manual

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84
MD 610_2d 11/2019
Chlorite in presence of Chlorine and
Chlorine dioxide
0,01 – 6 mg/l Cl
2
Firstly, the glycine method is used to measure the concen-
tration of Chlorine Dioxide. This is then followed by the
determination of the free and total chlorine, from which
the Combined Chlorine can be calculated. A third test is
performed which measuresthe Total Chlorine concentration
plusany Chlorite present. Finally,the Chlorite concentration
can be calculated from the three recorded results.
The following selection is shown in the display:
select for the determination of free Chlorine.
1. Fill a cleanvial with 10 ml of water sample .
2. Add one GLYCINEtablet straight from the foil to the
water sample and crushthe tablet using a clean stirring
rod.
3. Closethe vial tightly with the capand swirl gently several
times until the tablet is dissolved.
4. Fill a secondcleanvial with 10 ml of water sample ,
closetightly with the cap.
5. Placethe vial in the sample chamber making sure that
the
marks are aligned.
6. Press ZERO key.
7. Remove the vial from the sample chamber and
empty the vial.
8. Add one DPD No. 1 tablet straight from the foil and
crush the tablet using a clean stirring rod.
9. Transfer the contentsof the first vial (Glycinesolu-
tion) into the prepared vial (point 8).
1 0 0
>> free
Chlorine
>> diff
free
total
prepare Zero
press ZERO