Filtration by means of suction is employed, when possible, as this gives a more rapid and
complete separation of mother liquid from substance. Most any funnel can be made to work if equipped with a platform on which the filter paper can lay. Such a platform can be made from
a small ceramic plate with many small holes drilled through it or wire mesh. As long as theplatform does not react with your substance, it should be acceptable.
complete separation of mother liquid from substance. Most any funnel can be made to work if equipped with a platform on which the filter paper can lay. Such a platform can be made from
a small ceramic plate with many small holes drilled through it or wire mesh. As long as theplatform does not react with your substance, it should be acceptable.
Some things to remember during vacuum (suction) filtration are: the funnel tip should be below
the vacuum source outlet, cut your filter paper to fit the funnel platform exactly, in other words,
do not let the paper rest on the sides of your funnel
Vogel
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