Smoke generating tubes are designed for use in respirator fit tests. These tubes are of the stannic chloride type required by OSHA for use in the irritant smoke fit test procedure. The tubes can also be used for visualizing air currents, such as in testing the performance of fume hoods or in detecting leaks from an air duct.
*Asterisk indicates boxes do not contain 10 tubes. Standard boxes w/o asterisk have 10 tubes.