Microbiology: An Introduction, 11th Edition

Published by Benjamin Cummings
ISBN 10: 0321733606
ISBN 13: 978-0-32173-360-3

Chapter 6 - Figure 6.8 - Technicians in a biosafety level 4 (BSL-4) laboratory - Question - Page 165: 1

Answer

HEPA filters control intake and exhaust of air from BSL-4 containers and make sure that no pathogen can escape the environment by filtering air twice. Hence the material leaving the lab is rendered noninfectious.

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