Release 08/2014 - Spectroquant
®
Multy
114559
Cell Test
Measuring range: 4.0 – 80.0 mg/l NH
4
-N 16-mm-cell
5.2 – 103.0 mg/l NH
4
16-mm-cell
4.0 – 80.0 mg/l NH
3
-N 16-mm-cell
4.9 – 97.3 mg/l NH
3
16-mm-cell
Ammonium
Pipette 0.10 ml of the
sample into a reaction
cell, close with the
screw cap, and mix.
Add to each cell 1 dose
of NH
4
-1K using the blue
dose-metering cap, close
with the screw cap.
Shake both cells vigor-
ously to dissolve the
solid substance.
Pipette 0.10 ml of
distilled water into a
second reaction cell,
close with the screw cap,
and mix.
(Blank cell)
Select method 3 2 .
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .
Reaction time:
15 minutes
Press Enter to start
the countdown.
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) we recommended to use
Spectroquant
®
CombiCheck 70, Cat.No. 114689, or the
Standard solution for photometric applications, CRM,
Cat.No. 125025, 125026, and 125027.
Ready-for-use ammonium standard solution Certipur
®
,
Cat.No. 119812, concentration 1000 mg/l NH
4
+
, can also
be used after diluting accordingly.
To check for sample-dependent effects the use of addition
solutions (e.g. in CombiCheck 70) is highly recommended.
Important:
Very high ammonium concentrations in the sample
produce turquoise-colored solutions (measurement solu-
tion should be yellow-green to green) and false-low read-
ings are yielded. In such cases the sample must be di-
luted (plausibility check).
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
Check the pH of the
sample, specified range:
pH 4 – 13.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
