Chemac equipments offers vacuum dryers. The entire drying chamber is well machined to bring about a close encounter with the agitator blade thus ensuring proper shuffling of the material and thus avoiding localized overheating. The leak-proof front opening door ensures easy cleaning of the entire chamber. The top loading and bottom unloading facility provides for easy charging and discharging of the material. The cyclonic trap prevents the fine dust of the dry material from flying into the vapour condenser. The condenser and the condensate collection tank prevent the vapours from entering the vacuum pump. Appropriate vacuum pump, and accessories are provided with the unit with valves to adjust the right vacuum in the unit. The entire unit is mounted on a steel frame. They are used with particular success in agglomeration free rapid drying, heterogeneous reactions with systems of different substances, sterilization and in general for vacuum application. Heating arrangement can also be provided along with the unit.