Why are airflow indicators (pressure gauges) required?
 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
   Source of Information: HSG258 Controlling Airborne Contaminants at Work: A Guide to Local Exhaust Ventilation
   version 1.0

Sheet 38