Hot Air Oven, Automatic Grade : Semi Automatic

                  Determination of effect of ageing on various physical properties of different materials may be carried out by heating the material under test inside an air oven so that the effects of long term ageing are reproduced within a much shorter duration of time .for this determination, physical properties of the material under test are determined before ageing and ageing the test specimen at the specified temperature for a set duration of time and subsequent to the room temperature before conducting the tests again.