Pipette 10 ml of the
sample into a test tube.
Add 1 level blue micro-
spoon of Cl
2
-1.
Measuring 0.05 – 6.00 mg/l Cl
2
10-mm cell
range: 0.02 – 3.00 mg/l Cl
2
20-mm cell
0.010 – 1.000 mg/l Cl
2
50-mm cell
Expression of results also possible in mmol/l.
Chlorine
Determination of total chlorine
100602
Test
Add 2 drops of Cl
2
-2 and
mix.
Reaction time:
1 minute
Transfer the solution into
a corresponding cell.
Select method with
AutoSelector.
Place the cell into the
cell compartment.
Quality assurance:
To check the measurement system (test reagents,
measurement device, and handling) a freshly prepared
standard from Chlor
amine T GR can be used (see
section “Standard solutions”).
Shake vigorously to
dissolve the solid
substance.
Check the pH of the
sample, specified range
:
pH 4 – 8.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Important:
Very high chlorine concentrations in the sample produce
yellow-colored solutions (measurement solution should be
red) and f
alse-low readings are yielded. In such cases the
sample must be diluted (plausibility check).
After each determination of total chlorine rinse the cell
with sulfuric acid 25 % and subsequently several times
with distilled water.
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
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