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You are
Here: Short
Term Tubes D, H, N & O 105 |
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Hydrocarbons (Higher
Class) |
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NO.105 |
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C5`C10 |
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Performance |
| Measuring Range |
| 100 to 200 ppm |
200 to 3000 ppm |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time |
1.5 minutes per pump stroke |
| Detecting Limit |
20 ppm (n=2) |
| Colour Change |
White → Blackish brown |
| Reaction Principle |
Hydorocarbon (C6 + C10) + I2H5 + H2S2O7 → I2 |
| Coefficient of Variation |
10% (for 200 to 1000 ppm), 5% (for 1000 to 3000 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes at cool and dark place. |
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Possible
coexisting
substances
and their
interferences
(NOTE) |
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Substance |
Concentration |
Interference |
Change
colour
by
itself
to |
| Acetylene, Ethylene |
0.1% |
+ |
Blackish brown |
| Carbon monoxide |
0.1% |
+ |
Blackish brown |
| Other organic solvents |
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+ |
Blackish brown |
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Other
substance
measurable
with
this
detector
tube |
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Substance |
Correction
Factor |
No.
of
pump
strokes |
Measuring
Range |
| Decane |
2.0 |
1 or 2 |
200 to 6000 ppm |
| Heptane |
0.9 |
1 or 2 |
90 to 2700 ppm |
| Hexane |
0.8 |
1 or 2 |
80 to 2400 ppm |
| Nonane |
1.3 |
1 or 2 |
130 to 3900 ppm |
| Octane |
1.0 |
1 or 2 |
100 to 3000 ppm |
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Calibration
gas
generation |
Vaper
pressure
method |
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TLV-TWA |
TLV-STEL |
Explosive
range |
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Gastec Tubes and
Sampling Pump
