Indicator: 1~30ppm
Measuring Range:
+ 0.2 to 0.5 ppm, Number of Pump Strokes 2
+ 0.5 to 30 ppm, Number of Pump Strokes 1
+ 30 to 75 ppm, Number of Pump Strokes 1/2
Sampling Time: 1.5 minute per pump stroke
Colour Change: Yellow → Red
Reaction Principle: C2H5SH + HgCl2 →C2H5SHgCl + HCl, HCl + Base→ Chloride
Coefficient of Variation: 10% (for 0.5 to 5 ppm), 5% (for 5 to 30 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
manual tube
Performance
| Measuring Range |
| 0.2 to 0.5 ppm |
0.5 to 30 ppm |
30 to 75 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1.5 minutes per pump stroke |
| Detecting Limit |
0.15 ppm (n=2) |
| Colour Change |
Yellow → Red |
| Reaction Principle |
C2H5SH + HgCl2 →C2H5SHgCl + HCl
HCl + Base→ Chloride
|
| Coefficient of Variation |
10% (for 0.5 to 5 ppm), 5% (for 5 to 30 ppm) |
| Shelf Life |
2 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 |
| Hydrogen sulphide |
|
+ |
Red |
| Mercaptans |
|
+ |
Red |
| Acetylene |
|
No |
No |
| Carbon monoxide |
|
No |
No |
| Ethylene |
|
No |
No |
| Calibration gas generation |
Permeation tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 0.5 ppm(2014) |
- |
2.8 to 18.2% |
