Measuring 0.25 – 10.00 mg/l Cl
2
0.18 – 7.26 mg/l NH
2
Cl 0.05 – 1.98 mg/l NH
2
Cl-N 10-mm cell
range: 0.13 – 5.00 mg/l Cl
2
0.09 – 3.63 mg/l NH
2
Cl 0.026 – 0.988 mg/l NH
2
Cl-N 20-mm cell
0.050 – 2.000 mg/l Cl
2
0.04 – 1.45 mg/l NH
2
Cl 0.010 – 0.395 mg/l NH
2
Cl-N 50-mm cell
Expression of results also possible in mmol/l.
Monochloramine
101632
Test
Add 4 drops of MCA-2
and mix.
Reaction time:
10 minutes
Transfer the solution into
a corresponding cell.
Select method with
AutoSelector.
Place the cell into the
cell compartment.
Pipette 10 ml of the
sample into a test tube.
Add 0.60 ml of MCA-1
with pipette and mix.
Reaction time:
5 minutes
Quality assurance:
To check the measurement system (test reagents,
measurement device, and handling) a standard solution
m
ust be prepared (see section “Standard solutions”).
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 monochloramine concentrations in the sample
produce turquoise-colored solutions (measurement so-lu-
tion should be yellow-g
reen to green) and false-low
readings are yielded. In such cases the sample must be
diluted (plausibility check).
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
To Next Page