RAE Systems Gas Detection Tubes

Indicator tubes are designed to analyze samples of air and gases. Sealed glass tubes are filled with a reagent specifically sensitive to a target gas. If the target gas is present in an air sample drawn through the tube, a color change will occur in the tube’s reagent layer. The sample is pulled via either the manual piston pump or the motorized SampleRAE. Indicator tubes are used most frequently for health and safety monitoring. Common health and safety uses include the measurement of ambient air in the breathing zone of field personnel. The tubes also can be used to directly characterize ambient air and soil gas on hazardous waste sites. The tubes also can be placed in a tank, down a sewer, at the top of a monitoring well, or in many other locations to detect gases and vapors produced by solids and liquids, such as soils, sludges, and groundwater. The data obtained from indicator tubes are considered to be only qualitative or semiquantitative