Two fluid tanks share a semipermeable membrane: water crosses it, solute cannot. Water flows toward the side with the higher solute concentration until both sides reach equilibrium.
Live readout
Left level50%
Right level50%
Left conc.280 mOsm
Right conc.50 mOsm
Net flow rate0.000 %/s
Equilibrating…
Blue = water (crosses membrane) · Amber = solute (trapped on its side)