|
|
| Performance |
Measuring
Range
|
(25) to 1000 mg/l |
Sampling Hours
|
3 minutes |
Detecting Limit
|
1 mg/l |
Color Change
|
Brown --->
White |
| Reaction
Principle |
2Cl- + Ag2CrO4 --->
2AgCl |
| Shelf
Life |
3 Years |
| Corrections
for temperature & humidity |
Unnecessary |
| Store the
tubes at cool and dark place. |
| Possible
coexisting substances and their interferences |
Substance
|
Concentration
|
Interference |
Change
color by itself |
CN-
|
1 mg/l or higherl
|
Plus error
|
Produce white stain |
Br-
|
10 mg/l or higher
|
Plus error
|
Produce white stain |
SCN-
|
30 mg/l or higher
|
Plus error
|
Produce white stain |
Fe2+
|
200 mg/l or higher
|
Minus error |
No effect less
than 1000 mg/l |
Fe3+
|
20mg/l or higher
|
Minus error |
Produce white stain |
F-
|
500 mg/l or lower
|
Minus error |
No effect less
than 1000 mg/l |
I-
|
50 mg/l or higher
|
Plus error |
Produce white stain |
S2-
|
5 mg/l or higher
|
Plus error |
Produce blackish
gray stain |
SO42-
|
2000 mg/l or higher
|
Minus error |
Produce white stain |
| Calibration
gas generation |
Lodometry method |
|
