Paper 3 · June 2017 · aeroponics and fermenter design

Name the device that should be fitted into the exhaust pipe of an industrial fermenter.

Model answer

filter

Also accepted: air filter, sterile filter, microbial filter, HEPA filter

Explanation

The exhaust carries a fine aerosol of culture out of the vessel, so a filter is fitted in the pipe to trap it.

Derived from ZIMSEC Biology Paper 3, Jun 2017, Q11

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