Filtering or filtration is a way of separating a mixture which contains water. It is also used to purify water by removing solid particles which do not dissolve.
Making your own filtration equipment is not very difficult and is great fun. It doesn’t cost much either! All you need is plastic milk carton and screwcap (1 litre is ideal) and a teabag!
The tools you need are a pair of strong scissors and a bradawl or small screwdriver.