Release 08/2014 - Spectroquant
®
Multy
Measuring range: 1.0 – 50.0 mg/l NH
4
-N 16-mm
cell
1.3 – 64.4 mg/l NH
4
16-mm
cell
1.0 – 50.0 mg/l NH
3
-N 16-mm
cell
1.2 – 60.8 mg/l NH
3
16-mm
cell
Ammonium
100683
Test
Pipette 5.0 ml each of
NH
4
-1 into two 16-mm
cells.
Add to the second cell
0.20 ml of distilled water
with pipette, close with
the screw cap, and mix.
(Blank cell)
Add to each cell 1 level
blue microspoon of
NH
4
-2, close with the
screw cap.
Shake both cells vigor-
ously to dissolve the
solid substance.
Add to one cell 0.20 ml
of the sample with pipet-
te, close with the screw
cap, and mix.
Select method 3 4 .
Insert the blank cell into
the cell compartment.
Press Zero .
Insert the cell containing
the sample into the cell
compartment. Press
Test .
Reaction time:
15 minutes
Press Enter to start
the countdown.
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.
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).
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 and 125026.
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.
