Viable Air Sampling in Cleanroom Environments: Background, Purpose, and Procedures

By the end of this lesson, the learner will be able to:

1. Define viable air sampling and explain its role in environmental monitoring within sterile compounding and manufacturing environments.
2. Identify regulatory standards and guidance documents related to air sampling (e.g., USP <797>, USP <1116>, ISO 14698, FDA aseptic guidance).
3. Differentiate between passive and active viable air sampling methods, including settle plates and volumetric impaction samplers.
4. Select appropriate sampling locations and frequencies based on risk assessment, cleanroom classification, and activity levels.
5. Properly set up and operate viable air sampling equipment (e.g., slit-to-agar samplers, centrifugal samplers).
6. Label, incubate, and interpret microbial recovery data using colony-forming unit (CFU) counts and action/alert limits.
7. Document sampling results and respond appropriately to excursions including root cause analysis and corrective actions.
8. Apply viable air sampling principles in compliance with USP, FDA, and cGMP environmental monitoring expectations.