Compartment 1 Compartment 2 High solute concentration Low solute concentration One-way flux∴∴∴∵ One-way flux Net flux Note: the partition between the two com partments is a membrane that allows this solute to move through it. Net flux accounts for solute movements in both directionsNote: the partition between the two compartments is a membrane that allows this solute to move through it. Net flux accounts for solute movements in both directions