For example, a mole of glucose in solution is one osmole, whereas a mole of sodium chloride in solution is two osmoles (one mole of sodium and one mole of chloride).

For example, a mole of glucose in solution is one osmole, whereas a mole of sodium chloride in solution is two osmoles (one mole of sodium and one mole of chloride).

An osmole is one mole of dissolved particles in a solution.

However, urea is not an effective osmole because it readily passes across the cellular membrane.

The osmole is a non-SI unit, equal to the number of moles of osmotically active particles in an ideal solution.