Water Vapor Detection Tubes (3 to 100 lb/MMCF)
Gastec Detection Tube No. 6LP measures Water Vapor with a Range of 3 to 100 LB/MMCF.
- Measuring Range: 3 to 40 LB/MMCF, 40 to 100 LB/MMCF
- No. of Pump Strokes: 1, 1/2
- Correction Factor: 1, 2.5
- Sampling Time: 1.5 minutes per pump stroke
- Detecting Limit: 2 LB/MMCDF (1 pump stroke)
- Changes from Yellow to Greenish Purple (may become purple with high humidity)
- Corrections for temperature & humidity: Temperature correction is necessary
- Relative Standard Deviation: 10% (for 3 to 10 LB/MMCF), 5% (for 10 to 40 LB/MMCF)
- 3 Year Shelf Life
- Reaction Principle: H2O + Mg(ClO4)2 → Mg(ClO4)2･H2O
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| Sulfur dioxide |
≦ 15 ppm |
No |
No |
| Nitrogen dioxide, Hydrogen sulfide |
≦ 30 ppm |
No |
No |
| Hydrogen Cyanide |
≦ 45 ppm |
No |
No |
| Methyl ethyl ketone |
≦ 70 ppm |
No |
No |
| Ethyl acetate |
≦ 100 ppm |
No |
No |
| Acrylonitrile |
≦ 55 ppm |
No |
No |
| Acetaldehyde |
≦ 50 ppm |
No |
No |
| Methanol |
≧ 100 ppm |
+ |
Green |
| Triethylene Glycol |
|
No |
No |
Water Vapor Detection Tubes (3 to 100 lb/MMCF)
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