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Kitagawa Irritant Smoke Tube Kit for airflow indication & respirator fit testing. Includes 1 box of #301 (10 tubes) & aspirator bulb.

Flow visualization is common for air flow check in room and function check of local exhaust ventilation, but heat source is not suitable. The Model AS-1 is designed to check velocity and direction of air flow with a smoke tube (No.301) which reacts with vapour in the air and generates white smoke.