Place 1 blue micro-
spoon of NO
3
-1 into a
dry empty round cell
(Empty cells, Cat.No.
114724).
Nitrate
114773
Test
Transfer the solution into
a corresponding rectan-
gular cell.
Select method with
AutoSelector.
Place the cell into the
cell compartment.
Shake vigorously for
1 minute to dissolve the
solid substance.
Add very slowly 1.5 ml
of the sample with pi-
pette, close the cell with
the screw cap, and mix
briefly.
Caution, cell becomes
hot!
Measuring 0.5 – 20.0 mg/l NO
3
-N 2.2 – 88.5 mg/l NO
3
10-mm cell
range: 0.2 – 10.0 mg/l NO
3
-N 0.9 – 44.3 mg/l NO
3
20-mm cell
Expression of results also possible in mmol/l.
Add 5.0 ml of NO
3
-2 with
pipette into the cell.
Close the cell with the
screw cap.
Reaction time:
10 minutes
Note:
Empty cells with screw caps, Cat.No. 114724 are
recommended for the preparation.
These cells can be
sealed with the screw caps, thus enabling a hazard-free
mixing of the sample.
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) w
e recommended to use
Spectroquant
®
CombiCheck 10 and 20, Cat.No. 114676
and 114675, or the Standard solution for photometric
applications, CRM, Cat.No. 125036, 125037, and 125038.
Ready-for-use nitrate standard solution Certipur
®
,
Cat.No. 119811, concentration 1000 mg/l NO
3
–
, can also
be used after diluting accordingly.
To check for sample-dependent effects the use of addition
solutions (e.g. in CombiCheck) is highly recommended.
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