乙醇酒精檢測管112 Ethanol C2H5OH
Ethanol 12
C2H5OH
Performance |
MeasuringRange | 0.01to 0.05% | 0.05to 2.5% | 2.5to 7.5% |
Number of Pump Strokes | 2 | 1 | 1/2 |
CorrectionFactor | 0.2 | 1 | 3 |
SamplingTime | 3 minutes per pumpstroke | ||
DetectingLimit | 0.004% (n=2) | ||
ColorChange | Pink → Paleblue | ||
ReactionPrinciple | C2H5OH + Cr6+ + H2SO4 → Cr3+ | ||
Coefficient ofVariation | 15% (for0.05 to 0.5 %), 10% (for 0.5 to 2.5 %) | ||
ShelfLife | 3Years | ||
Correctionsfor temperature & humidity | Temperature correction is necessary | ||
Store the tubes at cool and darkplace. |
Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Carbonmonoxide | - | No effect | Nodiscoloration |
Carbondioxide | - | No effect | Nodiscoloration |
Alcohols | - | Plus error | Produce similarstain |
Othersubstance measurable with this detector tube |
Calibration gasgeneration | Static gas dilution method |
TLV-TWA | TLV-STEL | Explosive range |
1000ppm | - | 3.3 to19% |