Indicator: 50~1000ppm Mendicator: 50~1000ppmMendicator: 50~1000ppm
Measuring Range: 1.04 to 2000 ppm
Sampling Hours: 0.5 to 48 hours
Colour Change: Pale Yellow → Brown
Reaction Principle: CO + Na2Pd(SO3)2 → Pd + CO2 + SO2 + Na2SO3
Coefficient of Variation: 10% (for 50 to 1000 ppm-hr)
Nr. of tests: 10
Catalog
Performance
| Measuring Range |
1.04 to 2000 ppm |
| Sampling Hours |
0.5 to 48 hours |
| Detecting Limit |
2 ppm (10 hours) |
| Colour Change |
Pale Yellow → Brown |
| Reaction Principle |
CO + Na2Pd(SO3)2 → Pd + CO2 + SO2 + Na2SO3 |
| Coefficient of Variation |
10% (for 50 to 1000 ppm-hr) |
| Shelf Life |
2 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 |
| Nitrogen dioxide |
≧ 5 ppm |
 |
No |
| Chlorine |
|
No |
No |
| Hydrogen sulphide |
|
+ |
Reddish brown |
| Calibration gas generation |
High pressure gas cylinder method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 25 ppm |
- |
12.5 to 74% |
