Indicator: 1 to 10 ppm
Measuring Range: 1 to 10 ppm, Number of Pump Strokes 4
Sampling Time: 1 minute per pump stroke
Colour Change: Pink → Pale Yellow
Reaction Principle: C4H8S + MnO4 (Pink) → Pale Yellow Product
Coefficient of Variation: 10% (for 1 to 3 ppm), 5% (for 3 to 10 ppm)
Nr. of tests: 5
Pump: GV-100S/110S
Detail
Catalog
Manual
Performance
Measuring Range |
1 to 10 ppm |
Number of Pump Strokes |
4 |
Correction Factor |
1 |
Sampling Time |
1 minute per pump stroke |
Detecting Limit |
0.25 ppm (n=4) |
Colour Change |
Pink → Pale Yellow |
Reaction Principle |
C4H8S + MnO4 (Pink) → Pale Yellow Product |
Coefficient of Variation |
10% (for 1 to 3 ppm), 5% (for 3 to 10 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 |
Ethyl mercaptan |
1 ppm |
No |
Pale pink (whole layer) |
Ethylene |
1000 ppm |
No |
Pale pink (whole layer) |
Propylene |
500 ppm |
No |
Pale pink (whole layer) |
Methanol |
300 ppm |
No |
Pale pink (whole layer) |
Hydrogen sulphide |
30 ppm |
No |
Pale pink (whole layer) |
Calibration gas generation |
Diffusion tube method |
TLV-TWA |
TLV-STEL |
Explosive range |
- |
- |
- |