Release 08/2014 - Spectroquant
®
Multy
Add 1 level blue micro-
spoon of Cl
2
-1, close
with the screw cap.
Pipette 5.0 ml of the
sample into a round cell.
100595
Cell Test
Measuring range: 0.05 – 5.00 mg/l Cl
2
16-mm cell
Chlorine
Determination of free chlorine
Shake the cell vigor-
ously to dissolve the
solid substance.
Fill approx. 10 ml of
distilled water into an
empty 16-mm cell (do
not add any reagents!),
close with the screw
cap.
(Blank cell)
Select method 1 3 0 ,
select subitem >>free.
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .
Reaction time:
1 minute
Press Enter to start
the countdown.
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 blank cell into
the cell compartment.
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.
