Gastec detector tubes are thin glass tubes with calibration scales printed on them which allow you to directly read concentrations of the substances to be measured. These tubes are a great economical way to quickly screen for indoor contaminants.

• Gas or Vapor, Range, Tube#
• Carbon Dioxide - (XLR), 300-5000ppm, 2LL
• Carbon Dioxide - (XLR), 100-4000ppm , 2LC
• Carbon Monoxide - (XLR), 5-50ppm, 1LL
• Formaldehyde - (XLR), 0.05-1ppm, 91LL
• Acetic Acid - (LR), 0.125-25ppm, 81L
• Ozone - (LR), 0.125-3ppm, 18L
• Nitrogen Oxide - (LR) , 0.04-10.5ppm, 11L
• Hydrocarbons, 100-3000ppm, 105
• LR = Low Range XLR = Extra Low Range
• Tubes are available for over 300 substances

Complete Line of Sensidyne, Gastec & Draeger Detector Tubes Available!!!