Suction Apparatus: Correct Order of Turning Off

What is the correct order for turning off a suction apparatus?

a) Buchner funnel, vacuum, water aspirator
b) Vacuum, Buchner funnel, water aspirator
c) Water aspirator, vacuum, Buchner funnel
d) Water aspirator, Buchner funnel, vacuum

Answer:

The correct order for turning off a suction apparatus is: Vacuum, Buchner funnel, Water aspirator.

When turning off a suction apparatus like the one used in combination with a Buchner funnel, it is important to follow the correct order to avoid backflow and potential damage to the system. The steps are:

  1. Vacuum: Firstly, turn off the vacuum source to stop the suction process.
  2. Buchner Funnel: Next, close the Buchner funnel to secure the filtration set-up and prevent any further air from being pulled through.
  3. Water Aspirator: Lastly, if a water aspirator is used as the vacuum source, turn it off to stop the flow of water.

By following this correct order of turning off the suction apparatus (Vacuum, Buchner funnel, Water aspirator), you ensure the proper maintenance and functioning of the equipment.

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