Gastec Detector Tubes

Smoke Tester

Break off both ends of the smoke tube (No.501) and attach a rubber squeeze bulb to one end of the tube. When the bulb is squeezed, a chemical reaction produces white smoke. This smoke makes the air flow, (in ventilation systems/ducts, etc.) visible. This enables selection of air sampling spot, and also check of the air diffusion, air stagnation and air flow.