What are three good
reasons to secure a filter flask with a clamp when vacuum filtering
?
There are several precautions to be taken when performing a
vacuum filtration.
- The filter flask should not have any cracks on the sides or the
bottom.
- The filter flask and the vacuum trap are clamped securely, so
that they do not move during the filtration.
- Thick walled tubing should be used. Normal tubings will
collapse when a vacuum is applied.
- Vacuum trap should be clean. It is easier to recover it from a
clean trap than from a dirty trap if something gets sucked
inside.
- Vacuum filtrations should performed with funnels that have a
flat .