The gravity filtration

Filtration is used to separate a heterogeneous solid/liquid mixture.

Equipment

Support, ring, funnel, conical flask, filter paper and glass rod (not shown)

Principle

Large particles of suspended solids are retained by the pores of the filter paper.

Filter paper

The round filter paper can be folded in accordion ..

or simply folded in four:

It is then wetted and the filtration is done along a glass rod.