Abstract: An apparatus and method are disclosed for effecting liquid-liquid contact. An aqueous medium and an organic hydrophobic liquid medium are fed to a mixing chamber in which a "primary" dispersion, capable of disengaging sustantially completely into two separate layers on standing under gravity, is formed by suitable mixing means. Dispersion is allowed to flow upwardly and downwardly from the mixing chamber into upper and lower baffled zones positioned immediately above and below the mixing chamber respectively. Disengaged lighter medium is allowed to collect in an upper chamber above and communicating with the upper baffled zone, while disengaged heavier medium is allowed to collect in a lower chamber below and communicating with the lower baffled zone. Heavier medium is allowed to return to the mixing chamber from the upper baffled zone and lighter medium from the lower baffled zone.