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Nextteq Irritant Smoke Tube Kit for airflow indication & respirator fit testing. Includes 1 box of #9501 (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 9501 is designed to check velocity and direction of air flow with a smoke tube (No.9501) which reacts with vapour in the air and generates white smoke.