Draeger Smoke Tubes / air flow testers are used for gas leak detection and wind direction. Smoking sulfuric acid is located in the tubes. When the top of the tube is opened, a small aspirator bulb is used to pump air through the tube. This creates visible white smoke, which is carried on any existing air flows.
In certain industries it is very important to detect even the smallest air flows, in order to quickly and reliably evaluate the possible diffusion of dangerous substances. With the air flow test tubes, the source, direction and speed of the air flow are visible immediately.
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