A professional who tests emissions from smokestack to determine if electrostatic precipitator and flue recovery systems are operating within prescribed standards. Responsibilities include:

• Measures force of gas flow by observing manometer attached to Pitot tube placed at various points in stack.
• Obtains solids contained in gas by drawing metered quantity of flue exhaust through filter bag.
• Computes total amount of gases and solids lost, using specified formula.