Colorimetric Gas Detector Tubes
Variety
Short Term tubes are used to measure to concentration of specific contaminants instantaneously. Currently, about 160 short term Draeger tubes are available for determining and measuring more than 350 different gases, vapors and aerosols.
The majority of the short term Draeger Tubes are scaled tubes, operating on a defined sample volume drawn through the tube by performing a specified number of pump strokes. The concentration of the contaminant is read directly from the calibrated scale by assessing the length of the discoloration.
Short term measurements can be made manually with the Accuro gas detector pump or automatically with the battery operated Accuro 2000 or Quantimeter 1000 automatic pumps.
Aerosols
Included in the short term tubes are Draeger Tubes for aerosols. Aerosols are not gases or vapors, but liquid or solid particles suspended in air - such as dusts, fumes or mists. Draeger provides aerosol tubes for Arsenic Trioxide, Cyanides, Chromic Acid, Nickel, Oil Mist and Sulfuric Acid.
Selection
A tube should be selected to detect each suspected chemical. Simply locate the contaminant listed alphabetically in the following pages. Select the tubes listed according to the chemical hazard to be tested and the measuring range. Order the tube by the catalog number that appears to the left
Note: Measuring range information pertains to air monitoring only. The TLV limits found throughout this catalog were obtained from the ACGIH (Americans Conference of Governmental Industrial Hygienists) 1995-1996 Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices.
Area of Use
- Measuring concentration at a specific moment (e.g. concentration peaks)
- Measuring person related exposure in an inhalation area (e.g. at defined intervals)
- Detecting leaks (e.g. in pipelines or gas installations)
- Investigating confined space (e.g. canals, tunnels or tanks)
How The System Works
Simple 4 step operation:
- Select the appropriate Draeger Tube for chemical hazard and expected concentration.
- Open tube and insert in pump
- Pull sample through tube
- Read concentration directly from the color band on the scale
If the designated air contaminant is present, it reacts with the chemical reagent in the tube, producing a color change. The length or intensity of the color band indicated contaminant levels - the longer or darker the stain, the higher the concentration.
Caution: Interchanging Draeger Pumps and Tubes with other brands may cause erroneous results and should not be done.