Item #: 91L
MFG: GasTec
UOM:Box of 10
$84.32 Was: $91.91
$84.32

Formaldehyde Detection Tubes (0.1 to 40 ppm)

Measures Formaldehyde With a Range of 0.1 to 40 ppm. Other substances measurable with this detection tube are Diisobutyl ketone, Methaldehyde and Propionaldehyde (View table below for their information).


  • Number of Pump Strokes: 5, 1
  • Correction Factor: 1, 8
  • Sampling Time: 1.5 minutes per pump stroke
  • Detecting Limit: 0.05 ppm (n=5)
  • Changes from Yellow to Reddish Brown
  • Reaction Principle:
    • 3HCHO + (NH2OH)3H3PO4 → H3PO4 H3PO4 + Base → Phosphate
  • Coefficient of Variation: 10% (for 0.1 to 0.5 ppm), 5% (for 0.5 to 5 ppm)
  • 3 Year Shelf Life
  • TLV-TWA, C (ACGIH) (ppm): 20
  • Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
  • Comes in a Box of 10

Instructions

Data Sheet

Other substance measurable with this detector tube:

Substance: Correction Factor: No. of Pump Strokes: Measuring Range:
Diisobutyl ketone 5.8 4 0.58 to 29 ppm
Methaldehyde 0.65 3 0.065 to 3.25 ppm
Propionaldehyde 7.6 1 0.76 to 38 ppm