Indicator: 1 to 18 mg/L
Measuring Range:
+ 0.5 to 1 mg/L, Number of Pump Strokes 2
+ 1 to 18 mg/L, Number of Pump Strokes 1
+ 18 to 32 mg/L, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: Yellowish Green → Purple
Reaction Principle: H2O + Mg(ClO4)2 → Mg(ClO4)2 H2O
Coefficient of Variation: 10% (for 1 to 6 mg/L), 5% (for 6 to 18 mg/L)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Manual tube
Performance
| Measuring Range |
| 0.5 to 1 mg/L |
1 to 18 mg/L |
18 to 32 mg/L |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
45 seconds per pump stroke |
| Detecting Limit |
0.1 mg/L (n=2) |
| Colour Change |
Yellowish Green → Purple |
| Reaction Principle |
H2O + Mg(ClO4)2 → Mg(ClO4)2  H2O |
| Coefficient of Variation |
10% (for 1 to 6 mg/L), 5% (for 6 to 18 mg/L) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Alcohols, Ketones, Aldehydes, sulphur dioxide, Hydrogen chloride |
≧ 2000 ppm |
+ |
No |
| Esters, Acrylonitrile |
≧ 5000 ppm |
+ |
No |
| Ammonia |
≧ 1000 ppm |
+ |
No |
Nitrogen dioxide,
Hydrogen cyanide |
≧ 500 ppm |
+ |
No |
| Hydrogen sulphide |
|
No |
No |
| Calibration gas generation |
Vaper pressure method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| - |
- |
- |
