Understanding ISO 21501-4: Particle Counter Calibration

On Demand Webinar 

ISO 21501-4 has two main goals; to improve instrument-to-instrument data correlation and count accuracy, and to enhance compliance with ISO 14644.

By the end of this webinar, you should have a good understanding of the following concepts and how they affect your cleanroom particle counting efforts:

  • How to be compliant with the most recent calibration requirements
  • Sampling flow rate
  • Counting efficiency
  • Particle counter resolution
  • Pulse height analyser (PHA)
  • False count rate
  • Particle size setting
  • Coincidence loss at maximum particle concentration
  • Maximum particle number concentration