ISO 21501-4 is the recognized standard for optical particle counter calibration. In this blog, we look at the basics of the ISO 21501-4 standard for those new to particle counter calibration. Why do I need to care about ISO 21501-4? Your aerosol particle counter is going to need calibration maintenance…
…inside a cleanroom we could measure flakes of skin, small pieces of silicon or metal, or fungal spores… Most particles are non-uniform in structure, and this poses a question: How is the size qualified?
When particle counters work together to give data on the state of contamination control, they’re going to disagree on the numbers. But why do the counts not match? The answer encompasses model, manufacturing, engineering design, and calibration.
The regulatory requirements and best practices for monitoring compressed gasses in the Pharmaceutical and Cosmetics & Personal Care industries are explored here.
