The classification of solution base on size is called what

The classification of solutions based on particle size is generally referred to as the dispersion system classification. This classification categorizes mixtures into three main types:

• True solutions: Particles are very small (less than 1 nm) and uniformly dispersed.
• Colloidal solutions (or colloids): Particles are larger than true solutions but smaller than suspensions (1 nm to 1000 nm).
• Suspensions: Particles are large (greater than 1000 nm) and will settle out over time.