Propyl Acetate Detection Tubes (20 to 500 ppm)

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Item #: 145
MFG: GasTec

UOM: Box of 10

$101.13 Was: $108.07
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Propyl Acetate Detection Tubes (20 to 500 ppm)

Gastec Detection Tube No. 145 measures Propyl Acetate with a Range of 20 to 500 ppm.

  • Measuring Range: 20 to 500 ppm
  • Pump Strokes: 2 (200 ml)
  • Correction Factor: 1
  • Sampling Time: 2 minutes per pump stroke
  • Detecting Limit: 4 ppm (2 pump strokes)
  • Changes from Yellow to Blackish Brown, a few minutes later changes to Pale Blue
  • Corrections for temperature & humidity: Temperature correction is necessary
  • Reaction Principle: CH3CO2CH2CH2CH3 + Cr6+ + H2SO4 → Cr3+
  • Relative Standard Deviation: 15% (for 20 to 100 ppm), 10% (for 100 to 500 ppm)
  • 2 Year Shelf Life
  • Store the tubes at cool and dark place.

Possible coexisting substances and their interferences:

Substance Interference Changes color by itself to
Alcohols + Blackish brown
(few minutes later)
→ Pale blue
Esters + Blackish brown
(few minutes later)
→ Pale blue
Ketones + Blackish brown
(few minutes later)
→ Pale blue