Millipore Spectroquant Multy Operating Manual page 147

Measuring range: 5 – 400 µg/l NO
16 – 1313 µg/l NO
Attention: In contrast to the instructions given in the package insert the sample volume as well as the reagent volume
must be doubled.
Check the pH of the Select method 3 3 1 .
sample, specified range:
pH 2 – 10.
If required, add dilute
sulfuric acid drop by
drop to adjust the pH.
Shake the cell vigor- Check the pH, specified
ously to dissolve the range: pH 2.0 – 2.5.
solid substance. If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Release 08/2014 - Spectroquant
Nitrite
-N 24-mm cell
2
24-mm cell
2
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:
10 minutes
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) ready-for-use nitrite stan-
®
dard solution Certipur , Cat.No. 119899, concentration
–
1000 mg/l NO , can be used after diluting accordingly as
2
well as the Standard solution for photometric applications,
CRM, Cat.No. 125041.
The measurement results are expressed in µg/l.
114776
Test
Add 2 level blue micro-
spoons of NO -1, close
2
with the screw cap.
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .