• Aqueous extract to be evaporated is placed in the kettle and Steam which gives out heat to the content is supplied through the inlet condensate leaves through the outlet.
• For smaller volumes the contents must be stirred manually and mechanically for larger volumes. The rate of evaporation is fast in the initial stages.
• The room where evaporation is carried must have good ventilation to remove the vapor by this apparatus to avoid fog formation of condensed vapor.
• To vapor and prevents condensation in the room and also to accelerates the rate of evaporation fans are fitted.
• The kettle may be fixed or made to tilt. A kettle of capacity up to about 90 liters may be made to tilt. The bottom out let is used to collect the concentrated products.