Chloramine (Mono)
Chloramine (Mono)
Chloramine (Mono)_MP_Low_MCF_Eng_2400.fm Page 3 of 6
Table 2
Table 3
Sampling and Storage
Analyze samples for monochloramine immediately after collection. Rinse the
sample container several times with sample, letting the container overflow each
time. If sampling from a tap, let the water flow for at least 5 minutes. Then cap
the container so that there is no head space (air) above the sample.
Phosphate 100 mg/L PO
4
Silica 100 mg/L SiO
2
Sulfate 2600 mg/L
Sulfite 50 mg/L SO
3
2–
Tyrosine 1 mg/L N
Urea 10 mg/L N
Zinc 5 mg/L
Interfering Substance
and its effect
Interference Level
Recommended
Treatment
Magnesium + Above 400 mg/L CaCO
3
Add 5 drops Rochelle Salt Solution prior to testing.
OR: use the high range (HR) test.
Manganese (+7) – Above 3 mg/L Use the HR test; it will tolerate up to 10 mg/L.
Ozone – Above 1 mg/L Usually doesn’t coexist with monochloramine.
Sulfide +
Turns a “rust” color if
present.
Usually doesn’t coexist with monochloramine.
Thiocyanate – Above 0.5 mg/L Use the HR test; it will tolerate up to 2 mg/L.
Sample Temperature
Minutes
° C ° F
54010
7429
9488
10 50 8
12 54 7
14 58 7
16 61 6
18 68 4
20 73 3
23 75 2.5
25 77 2
>25 >77 2
Table 1 (continued)
Substance Maximum Level Tested
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