Millipore Spectroquant Multy Operating Manual page 184

Measuring range: 1.0 – 20.0 mg/l SO
Check the pH of the Select method 4 6 0 .
sample, specified range:
pH 4 – 9.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Add to the second cell Reaction time:
3.0 ml of distilled water 2 minutes
with pipette, close with Press Enter to start
the screw cap, and mix. the countdown.
(Blank cell)
Release 08/2014 - Spectroquant
Sulfite
16-mm cell
3
Add 1 level grey micro-
spoon each of SO
into two reaction cells,
close with the screw cap.
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
®
Multy
Shake both cells vigor-
-1K ously to dissolve the
3
solid substance.
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) a sulfite standard solution
must be prepared from sodium sulfite GR, Cat.No. 106657
(see section "Standard solutions").
114394
Cell Test
Add to one cell 3.0 ml of
the sample with pipette,
close with the screw cap,
and mix.