Methods
GB
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CL
2
Zero
Test
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CL
2
0.0.0
!
Zero
Test
_
CL
2
RESULT
Notes:
1.
Ensure that all particles of the tablet are dissolved – Chloride causes an extremely fine
distributed turbidity with a milky appearance.
Heavy shaking leads to bigger sized particles which can cause false readings.
2.
High concentrations of electrolytes and organic compounds have different effects on the
precipitation reaction.
3.
Ions which also form deposits with Silver nitrate in acidic media, such as Bromides,
Iodides and Thiocyanates, interfere with the analysis.
4.
Highly alkaline water should - if necessary - be neutralised using Nitric acid before
analysis.
MD100_1a 06/2012
Chloride with Tablet
5 – 250 mg/l
Fill a clean vial (24 mm Ø) with 1 ml of the water sample and fill
the vial to the 10 ml mark with deionised water. Close the vial
tightly with the cap.
Place the vial in the sample chamber making sure that the
are aligned.
Press the [ZERO/TEST] key.
The "Method" symbol flashes for approx. 8 seconds.
The display shows:
Add one CHLORIDE T1 tablet straight from the foil to the prepared
water sample, crush the tablet using a clean stirring rod and dissolve
the tablet completely.
Add one CHLORIDE T2 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 (note 1).
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 21)
The "Method" symbol flashes for approx. 3 seconds.
The result is shown in the display in mg/l Chlorid.
Tolerances: ± 25 mg/l Cl
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marks
marks
23