Learning Objectives

By the end of this lesson, pharmacists and technicians will be able to:

  1. Explain the purpose of surface sampling and its role in environmental monitoring and contamination control.
  2. Identify the types of media used in contact plates (e.g., Tryptic Soy Agar, Sabouraud Dextrose Agar, and neutralizers) and their functions.
  3. Describe USP <797> requirements for the frequency, timing, and locations of surface sampling in classified cleanroom areas.
  4. Demonstrate the correct technique for collecting a surface sample using contact plates.
  5. Outline the proper labeling, transport, and incubation conditions for collected plates, including the two-stage incubation method.
  6. Interpret action levels for ISO 5, ISO 7, and ISO 8 areas, and recognize when results require investigation.
  7. Apply corrective and preventive actions (CAPA) when surface sampling results exceed action levels.
  8. Document sampling results accurately, including site, date, operator, media lot, incubation, and final counts.
  9. Perform post-sampling cleaning of surfaces to restore aseptic conditions.
  10. Summarize the role of surface sampling in maintaining patient safety and compliance with USP standards.