Millipore Spectroquant Multy Operating Manual page 152

Measuring range: 0.02– 3.00 mg/l O
Check the pH of the Select method 3 5 0 .
sample, specified range:
pH 4 – 8.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Add 1 level blue micro- Shake the cell vigor-
spoon of O -2, close ously to dissolve the
3
with the screw cap. solid substance.
Important:
Very high ozone 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).
Release 08/2014 - Spectroquant
Ozone
24-mm cell
3
Fill approx. 10 ml of
distilled water into a
24-mm cell (do not add
any reagents!), close
with the screw cap.
(Blank cell)
Reaction time:
1 minute
Press Enter to start
the countdown.
®
Multy
Pipette 10 ml of the
sample into a 24-mm
cell.
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
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").
100607
Test
Add 2 drops of O -1,
3
close with the screw
cap, and mix.
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .