Elma Instruments 42.2372 Smart Smoke Pen for Airflow Testing

Handheld smoke pen used to visualise low-velocity airflow when commissioning ventilation systems, checking fume-hood face capture and locating leaks in ductwork or building envelopes. Emits a dense, non-toxic white smoke plume that follows air currents for direct visual reading. Analogue instrument with no memory or interface; supplied in packs of 25.