Spectroquant Pharo 300 - Page 353

114547
Cell Test
Nitrite
Measuring 0.010 – 0.700 mg/l NO
2
-N
range: 0.03 – 2.30 mg/l NO
2
Expression of results also possible in mmol/l.
Pipette 5.0 ml of the
sample into a reaction
cell, close with the
screw cap.
Shake the cell vigorous-
ly to dissolve the solid
substance.
Reaction time:
10 minutes
Place the cell into the
cell compartment. Align
the mark on the cell with
that on the photometer.
Check the pH of the
sample, specified range
:
pH 2 – 10.
If required, add dilute
sulfuric acid drop by
drop to adjust the pH.
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) ready-f
or-use nitrite stan-
dard solution Certipur
®
, Cat.No. 119899, concentration
1000 mg/l NO
2
–
, can be used after diluting accordingly as
well as the Standard solution for photometric applications,
CRM, Cat.No. 125041.