Millipore Spectroquant Multy Operating Manual page 148

Measuring range: 1.0 – 90.0 mg/l NO
3.3 – 295.2 mg/l NO
Check the pH of the Select method 3 3 2 .
sample, specified range:
pH 1 – 12.
If required, add dilute
sulfuric acid drop by
drop to adjust the pH.
Shake the cell vigor- Reaction time:
ously to dissolve the 20 minutes, measure
solid substance. immediately.
Press Enter to start
the countdown.
Do not shake or swirl
the cell before the
measurement.
Release 08/2014 - Spectroquant
Nitrite
-N 16-mm cell
2
16-mm cell
2
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)
Insert the blank cell into
the cell compartment.
Press Zero .
®
Multy
Add 2 level blue micro-
spoons of NO -1K into a
2
reaction cell.
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) 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. 125042.
100609
Cell Test
Add 8.0 ml of the
sample with pipette
and close with the
screw cap.