Add 3 drops of Cl
2
-2,
close with the screw
cap, and mix.
Place 6 drops of Cl
2
-1
into a 24-mm cell.
Measuring range: 0.02 – 4.50 mg/l Cl
2
24-mm
cell
Add 10 ml of the sample
with pipette, close with
the screw cap, and mix.
Chlorine
(with liquid reagents)
Detemination of free chlorine
100086/100087
Test
Fill approx. 10 ml of
distilled water into a
24-mm cell (do not add
any reagents!), close
with the screw cap.
(Blank cell)
Select method 1 3 3 ,
select subitem >>free.
Important:
Very high chlorine concentrations in the sample produce
yellow-colored solutions (measurement solution should be
red) and false-low readings are yielded. In such cases the
sample must be diluted (plausibility check).
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) a freshly prepared standard
solution can be used (see section “Standard solutions”).
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
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.
Release 08/2014 - Spectroquant
®
Multy
Reaction time:
1 minute
Press Enter to start
the countdown.
