Understanding ISO 21501-4 – Particle Counter Calibration

ISO 21501-4 has two main goals; to improve instrument-to-instrument (particle counter) 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 particle counter calibration requirements
• particle counter Sampling flow rate
• particle counter Counting efficiency
• Particle counter resolution
• Pulse height analyzer (PHA)
• False count rate
• Particle size setting
• Coincidence loss at maximum particle concentration
• Maximum particle number concentration