Figure 1From: Tobacco smoke particles and indoor air quality (ToPIQ-II) – a modified study protocol and first results Automatic environmental tobacco smoke emitter: the AETSE consists of a glass syringe with a plunger, a stepper motor to pull and push the plunger, a microcontroller that drives the motor and aluminium parts. Two rubber gloves are embedded into the glass panel to operate the system.Back to article page