Stoddard Solvent Detection Tubes (50 to 8000mg/m3)
Gastec Detection Tube No. 128 measures Stoddard Solvent with a Range of 50 to 8000 mg/m3.
- Measuring Range: 50 to 8000 mg/m3
- No. of Pump Strokes: 1 (100 ml)
- Correction Factor: 1
- Sampling Time: 1.5 minutes per pump stroke
- Detecting Limit: 5 mg/m3 (1 pump stroke)
- Changes from White to Brown (ring)
- Corrections for temperature & humidity: Unnecessary
- Reaction Principle: Stoddard Solvent + I2O5 + H2S2O7 → I2
- Relative Standard Deviation:
- 15% (for 50 to 1000 mg/m3)
- 10% (for 1000 to 8000 mg/m3)
- 3 Year Shelf Life
- Store the tubes at cool and dark place.
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| Acetylene |
≧ 0.2 % |
+ |
Pale brown (whole layer) |
| Alcohols, Esters, Ketones |
|
No |
Pale brown (whole layer) |
| Carbon monoxide |
≧ 0.1 % |
+ |
Pale brown (whole layer) |
| Ethylene, Hexane |
≧ 0.2 % |
+ |
Pale brown (whole layer) |
| Aromatic hydrocarbons |
|
+ |
Dark green |
Stoddard Solvent Detection Tubes (50 to 8000mg/m3)
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