Filtration is a method of separating insoluble substances from liquids or solutions. Insoluble substances are those that do not dissolve in a solvent. For example, sand is an insoluble substance.

A common example of filtration in everyday life is when hot water is passed through ground coffee and a filter. The liquid that passes through the filter is called the filtrate, while the insoluble parts of the coffee, such as the grounds, are separated and removed.

To carry out a filtration, you will need:

  • Conical flask
  • Funnel
  • Filter Paper – Fold it twice

As shown in the diagram above, a filter funnel and paper are used.

1. Pour your mixture into the filter funnel.

2. The solid particles are too large to pass through the filter paper, so they stay behind.

3. The liquid or solution passes the filter into the conical flask, and it is called the filtrate.