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Podcast: The Occupational Safety Leadership Podcast
Episode: Episode 41 - Parts per Million (PPM) in an air sample
Description: Episode 41 explains what “parts per million” (PPM) actually means, how it’s used in air monitoring, and why understanding PPM is essential for interpreting exposure data, gas detector readings, and regulatory limits. Dr. Ayers breaks the concept down into simple, practical terms that safety leaders can use in the field.
The core message: PPM is a ratio — a way to express how much of a substance is present in air. If you don’t understand PPM, you can’t interpret exposure or atmospheric monitoring results.
🧭 What PPM Represents
PPM is a unit of concentration. It describes how ma...