Smoke Tester Set No.500
This set allows the operator to test air flows in workplaces accurately and easily. Just break off both ends of No.501 Smoke Generation Tube (6 tubes/box) and connect the tube to the rubber bulb. Squeezing the bulb provides atmospheric moisture that reacts with the reagent in the tube, generating a white smoke. A single No.501 tube can be used repeatedly for 50 to 100 testes by sealing the tube ends with the rubber caps after each test.