People in the Cleanroom – Behavior, Protocol, and Gowning

What % of cleanroom contamination typically comes from people?

• a) 20%
• b) 40%
• c) 60% ✅Explanation: Human activity is a leading source of contamination
• d) 90%

What should be the first garment put on when entering a cleanroom?

• a) Gloves
• b) Gown
• c) Shoe covers ✅Explanation: Shoe covers are put on first to prevent tracking in particles.
• d) Face mask

Which motion increases particle shedding the most?

• a) Standing still
• b) Walking fast ✅Explanation: Walking stirs up more particles, especially on unsealed surfaces.
• c) Slow bending
• d) Turning in place

Why are there specific “dance–like” movements used during gowning?

• a) To reduce stress
• b) To sanitize the floor
• c) To avoid recontaminating garments ✅Explanation: Strategic movements during gowning prevent cross-contamination.
• d) To show team spirit

What is the correct order of gowning in an ISO 5 sterile compounding cleanroom?

• a) Hair cover → face mask → shoe covers → gown → gloves ✅Explanation: Proper gowning order ensures each step protects the next.
• b) Gown → shoe covers → gloves
• c) Gloves → gown → face mask
• d) Shoe covers → gloves → hairnet