Gastec 128 快速干洗溶剂汽油测量探测管(50~8000 mg/m3)

Indicator: 50 ~ 8000 mg/m3
Measuring Range: 50 ~ 8000 mg/m3, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Brown (ring)
Reaction Principle: Stoddard Solvent + I2O5 + H2S2O7 → I2
Coefficient of Variation: 15% (for 50 to 1000 mg/m3), 10% (for 1000 to 8000 mg/m3)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range 50 to 8000 mg/m3
Number of Pump Strokes 1
Correction Factor 1
Sampling Time 1.5 minutes per pump stroke
Detecting Limit 5 mg/m3 (n=1)
Colour Change White → Brown (ring)
Reaction Principle Stoddard Solvent + I2O5 + H2S2O7 → I2
Coefficient of Variation 15% (for 50 to 1000 mg/m3), 10% (for 1000 to 8000 mg/m3)
Shelf Life 3 Years
Corrections for temperature & humidity Unnecessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Carbon monoxide ≧0.1% + Pale brown (whole layer)
Acetylene, Hexane, Ethylene ≧0.2% + Pale brown (whole layer)
Alcohols, Ketones,Esters   No Pale brown (whole layer)
Aromatic hydrocarbons   + Dark green
Calibration gas generation Vaper pressure method
TLV-TWA TLV-STEL Explosive range
100ppm(2014) - 0.8 % or higher

 

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