Thermo Scientific AQUAfast AQ3700, User Manual

Page: 36 / 264

3 Thermo Scientific Orion AQUAfast AQ3700 Colorimeter User Guide
1.1 Methods
Chloramine (Mono) and
Free Ammonia
with Powder Pack
and Liquid Reagent
0.04 – 4.50 mg/l Cl
2
The following selection is shown in the display:
for the determination of Monochloramine and
free Ammonia
for the determination of Monochloramine
Select the desired determination with the arrow keys [ ]
and [ ]. Confirm with
[ ] key.
Notes:
1. Full color development – temperature:
The reaction periods indicated in the manual refer to a sample temperature between
18° and 20°C. Due to the fact that the reaction period is strongly influenced by sample
temperature, you have to adjust both reaction periods according to the following table:
Sample temperature
in °C
Reaction period in min
5 10
10 8
16 6
20 5
23 2.5
25 2
Chloramine (Mono)
>>
with NH4
without NH4
>>
with NH4
6
3
>>
without NH4