Interferences - Hach POCKET COLORIMETER II Instruction Manual

Nitrogen, Free Ammonia and Chloramine (Mono),

Interferences

The following do not interfere in free ammonia determination when at or below
the stated concentration.
Substance
Aluminum
Chloride
Copper
Iron
Manganese
Nitrate
Nitrite
Phosphate
Silica
Sulfate
1—18
Level Tested
0.2 mg/L Al
1200 mg/L Cl
1 mg/L Cu
0.3 mg/L Fe
0.05 mg/L Mn
10 mg/L NO –N
3
1 mg/L NO –N
2
2 mg/L –PO
4
100 mg/L SiO
2
1600 ppm as CaCO
continued
3