Hach DR/850 Procedures Manual page 96

CHLORAMINE, MONO, High Range, continued
Table 11 Non-interfering Substances (Continued)
Substance
Chloride
Chlorine Dioxide
Chromium (III)
Copper
Cyanide
Free Chlorine
Glycine
Iron (II)
Iron (III)
Magnesium
Manganese (VII)
Lead
Nitrate
Nitrite
Phosphate
Silica
Silver
Sulfate
Sulfite
Tyrosine
Urea
Zinc
Table 12 Interfering Substances
Interfering Substance
and its effect
Ozone
Sulfide
Thiocyanate
96
Maximum Level Tested
18,000 mg/L
5 mg/L ClO
5 mg/L
10 mg/L
10 mg/L CN
10 mg/L Cl
1 mg/L N
10 mg/L
10 mg/L
1000 mg/L as CaCO
10 mg/L
10 mg/L
100 mg/L N
50 mg/L N
100 mg/L PO
100 mg/L SiO
10 mg/L
2600 mg/L
50 mg/L SO
1 mg/L as N
10 mg/L as N
5 mg/L
Interference Level
– Above 1 mg/L
+ Turns a "rust" color if
present.
– Above 0.5 mg/L
2
–
2
3
4
2
2–
3
Recommended
Treatment
Usually doesn't coex-
ist with monochlora-
mine
Usually doesn't coex-
ist with monochlora-
mine