Accuracy Check (Monochloramine Test) - Hach POCKET COLORIMETER II Instruction Manual

Nitrogen, Free Ammonia and Chloramine (Mono),
Sample Temperature
°C
18
20
23
25
> 25

Accuracy Check (Monochloramine Test)

Standard Solutions Method
Standard solutions for monochloramine are difficult and time-consuming to
prepare. Errors can occur if attention to detail is not addressed during preparation
of the standards. Hach Company prepares the calibration curve under rigorous
analytical laboratory conditions. Hach recommends using the factory calibration.
Table 1 Reaction Period (Continued)
°F
64
68
73
77
> 77
1—21
continued
Reaction Period
(Minutes)
5
5
2½
2
2