There are a variety of systems in which the particles are much larger, ranging from the highest limit for conventional solutions to several micrometres.
Colloids are systems that contain dissolved or dispersed particles with sizes ranging from 1 to 1000 nm.
Colloidal particles are much smaller and cannot be seen with the naked eye.
Colloidal particles easily pass through ordinary filter paper and two phases make up a colloidal system.
Dispersed phase or discontinuous phase is the phase that is dispersed or scattered through the dispersion medium.
The dispersion media, also known as the continuous medium, is the phase in which scattering takes place.
A colloidal system can have two phases that are either gases, liquids, or solids.
The fat globules in milk, for example, are dispersed in water. As a result, fat globules form a dispersed phase, and the dispersed medium is water.
As a result of the above explanation, we can conclude that colloids have particle sizes ranging from 1 nm to 1000 nm.
Final Answer:
The particle size of colloidal solution is 1 nm to 1000 nm.