Indicator: 0.1~1.0 mg/l
Measuring Range:
+ 0.05 to 1 mg/L, Number of Pump Strokes 1
+ 1 to 2 mg/L, Number of Pump Strokes 1/2
Sampling Time: 30 seconds per pump stroke
Colour Change: Yellow → Purple
Reaction Principle: H2O + Mg(ClO4)2 → Mg(ClO4)2 H2O
Coefficient of Variation: 10% (for 0.05 to 0.2 mg/L), 5% (for 0.2 to 1 mg/L)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Manual tube
Performance
| Measuring Range |
| 0.05 to 1 mg/L |
1 to 2 mg/L |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
30 seconds per pump stroke |
| Detecting Limit |
0.03 mg/L (n=1) |
| Colour Change |
Yellow → Purple |
| Reaction Principle |
H2O + Mg(ClO4)2 → Mg(ClO4)2  H2O |
| Coefficient of Variation |
10% (for 0.05 to 0.2 mg/L), 5% (for 0.2 to 1 mg/L) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Alcohols |
|
Unclear demarcation |
Purple (whole layer) |
| Aldehydes |
|
Unclear demarcation |
Purple (whole layer) |
| Ketones |
|
Unclear demarcation |
Purple (whole layer) |
| Nitriles |
|
Unclear demarcation |
Purple (whole layer) |
| Hydrocarbons |
|
No |
No |
| Nitrogen dioxide |
|
No |
No |
| Sulphur dioxide |
≧ 100 ppm |
+ |
No |
| Ammonia |
≧ 10 ppm |
Unclear demarcation |
Yellowish green |
