Methods; Chloride 0.5- 25 Mg/L, With Tablet - Lovibond Tintometer MD100 Manual De Instrucciones

Methods

GB
_
CL 1
0.0.0
Zero
!
Test
_
CL 1
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.
22
Chloride with Tablet
0.5 – 25 mg/l
Fill a clean vial (24 mm Ø) with 10 ml of the water sample and
perform zero calibration (see "Operation").
Add one CHLORIDE T1 tablet straight from the foil to the 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: ± 2.5 mg/l Cl
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marks
MD100_1a 06/2012