Replacement smoke tubes for Dräger Air Current Kit.
These tubes consist of a porous carrier impregnated with fuming sulfuric acid. After opening the tube tips the air is pumped through the tube with the help of a rubber bulb. The white smoke emerging from the tube is carried along by the air flow and makes its direction visible.
The air flow tester can be used repeatedly until smoke is finally exhausted. If the test is completed before the tube is exhausted, the tube should be sealed with the rubber caps provided.
Includes 10 Tubes