Colorimetric Gas Indicators

Detector tubes can be used for spot measurements of over 200 organic and inorganic gases and vapors in the air. These tubes are most useful for screening purposes to determine, if warranted a need for further analysis. Sealed glass tubes are filled with a granular reagent that is coated with an appropriate indicator chemical that will react with a specific gas or vapor to provide a color change. A pump is used to draw a known volume of gas inside the tube to measure the concentration of the substance. Pumps can be hand or battery operated. A number of commercially manufactured hand pump colorimetric gas indicators are available; in addition, a battery pumped Dragger Chip Measurement System (CMS) uses a colorimetric 10 capillary chip for multiple gas detection.

Colorimetric Gas Indicators

Colorimetric Gas Indicator Tubes

Draeger, Ion Science - Uniphos ASP-40, Draeger Accuro (bellows pump), MSA RAE LAP - 1200, MSA Kwik Draw Deluxe (bellows pump), Sensidyne