Test Procedures
APPLICATION:
Low concentrations of ammonia in fresh, brackish and salt
water; fresh and salt water aquariums.
RANGE:
0.00–1.00 ppm Ammonia-Nitrogen
MDL:
0.02 ppm Fresh Waer
0.10 ppm Salt Water
METHOD:
Salicylate and ammonia react at high pH in the presence of a
chlorine donor and an iron catalyst to form a blue indophenol
dye, the concentration of which is proportional to the ammonia
concentration in the sample.
SAMPLE HANDLE &
PRESERVATION:
Ammonia solutions tend to be unstable and should be analyzed
immediately. Samples may be stored for 24 hours at 4°C or 28
days at –20°C.
INTERFERENCES:
There are few interferences in most natural waters. High
concentrations of reducing agents, such as hydrazine, react
with the chlorine donor and can result in negative interferences.
Color and turbidity can also interfere.
AMMONIA-NITROGEN,
Low Range
SMART Spectro 2 Test Procedures 05.02.16
www.
GlobalScientificSupply
.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!
