Abstract: A method and apparatus for vacuum dehydrating heat sensitive liquid material, particularly fruit juices including citrus and tomato juices. A top loading, endless belt conveyor for the thin liquid film is disposed in a vacuum dehydrator chamber which is maintained at about 2 mm. Hg. The belt travels through a cooling zone and a heating zone to attain substantially complete dehydration of the thin film. The liquid material is continuously applied to the upper side of the belt in the cooling zone by means of an applicator system comprising a grooved metering roll and a counter-rotating applicator roll which continuously deposits a uniform film of about 0.005 to 0.05 inches thickness on the endless belt. Dry product at about 0.5-2.5% moisture is removed from the belt in the cooling zone by means of a doctor blade which scrapes the product from the endless belt just prior to the portion of the cooling zone where the applicator system feeds additional liquid material onto the belt.