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简单介绍:
苯乙烯检测管 124 Styrene,Measuring Range 10 to 20 ppm 20 to 500 ppm 500 to 1500 ppm,苯乙烯检测管价格,氨气、氯气、二氧化氮、二氧化硫、甲醛、硫酸二甲酯、氟化氢、硫化氢、氯化氢、砷化氢、汞蒸气、苯、甲苯、二甲苯、甲醇、乙醇、乙烯、乙炔、乙醚、汽油、光气、氰化氢、丙烯腈、磷化氢等几十种检测管
详情介绍:
苯乙烯检测管 124 Styrene
Styrene No.124
C6H5CH:CH2
Performance |
MeasuringRange | 10 to 20 ppm | 20 to 500 ppm | 500 to 1500ppm |
Number of Pump Strokes | 2 | 1 | 1/2 |
Correction Factor | 1/2 | 1 | 3 |
SamplingTime | 30 seconds per pumpstroke | ||
DetectingLimit | 1 ppm (n=2) | ||
ColorChange | White → Yellow | ||
ReactionPrinciple | C6H5CH:CH2+H2S2O7 → CondensationPolymer | ||
Coefficient ofVariation | 15% (for20 to 100 ppm), 10% (for 100 to 500 ppm) | ||
ShelfLife | 3Years | ||
Correctionsfor temperature & humidity | Unnecessary | ||
Store the tubes at cool and darkplace. |
Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Alcohols | 0.5% | Plus error(Bleaching) | Nodiscoloration |
Esters | 0.5% | Plus error(Bleaching) | Nodiscoloration |
Ketones | 0.5% | Plus error(Bleaching) | Nodiscoloration |
Othersubstance measurable with this detector tube |
Calibration gasgeneration | Diffusion tubemethod |
TLV-TWA | TLV-STEL | Explosive range |
20ppm | 40ppm | 1.1to 6.1% |