Isokinetic Probe Particle Counter Air Flow Rate Requirements
There is an optimum air flow rate within unidirectional environments which is required for Isokinetic particle sampling to act as a sheathing air that washes particles from a potential contamination source away from the process risk before being exhausted from the process area. This ensures that this potential contamination does not extend beyond a field of control. This flowrate was historically defined as 90 feet per minute, which roughly converts to 0.45 m/s. Current requirements suggest…
