Acrylonitrile Detection Tubes (2 to 360 ppm)

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Item #: 191
MFG: GasTec
UOM: Box of 10
Min Order: 0
Order Qty: Must order in multiples of 1
$87.67 Was: $93.72
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Acrylonitrile Detection Tubes (2 to 360 ppm)

Gastec Detector Tube No 191 is used for the detection of Acrylonitrile in the air of industrial areas and in environmental atmospheric conditions. 

  • Measuring Range:
    • 2 to 5 ppm - 4 pump strokes - Correction Factor is 0.4
    • 5 to 120 ppm - 2 pump strokes - Correction Factor is 1
    • 120 to 360 ppm - 1 pump stroke - Correction Factor is 3
  • Sampling Time: 45 seconds per pump stroke
  • Detecting limit: 1 ppm (4 pump strokes)
  • Changes from Yellow to Red
  • Corrections for temperature & humidity: Temperature correction is necessary
  • Relative Standard Deviation: 10% (for 5 to 40 ppm), 5% (for 40 to 120 ppm)
  • 3 Year Shelf Life
  • Reaction Principle:
    • CH2:CHCN + Cr 6+ + H2SO4 → HCN
    • 2HCN + HgCl2 → 2HCl
    • HCl + Base → Chloride
  • Store the tubes at a cool and dark place.

Possible coexisting substances ad their interferences:

Substance Concentration Interference Changes color by itself to
Acetone cyanohydrin ≧ 10 ppm + Red
Nitriles (≧ C3) ≧ 10 ppm + Red
Alcohols, Esters, Ketones No No
Aromatic hydrocarbons No No
Hydrogen Chloride No No
Hydrogen cyanide No No

Other substance measurable with this detector tube:

Substance Concentration No. of Pump Strokes Measuring Range
Propionitrile Factor: 10 4 50 to 1200 ppm