Apparatus for controlling the ventilation of laboratory fume hoo
Apparatus for determining the position of a moveable structure a
Apparatus for generating at least one jet of gaseous fluid
Apparatus for removal of second hand smoke
Apparatus for the reduction of tobacco smoke
Arrangement for extraction of harmful gases from workplaces
Arrangement in fume extraction arms
Articulated duct fume collection and exhaust apparatus
Ashtray assembly for use with smoke removal apparatus
Automatic sash return for work chamber
Automotive powder coating booth with modulated air flow