HOT AIR OVEN

                         HOT AIR OVEN

   

PRINCIPLE :

                            It is an electronic device which used sor the sterilization [ sterilization is a technique for the removal of all tyoe of microorganism]. , Hot air oven used dry heat to sterized the articles . when electricity is passed through the heating coil, electrical energy is converted into heating energy and its used for  dry sterilization.

    

  WORKING :

v Set the temprature.

v Wait for temperature maintainance.

v Keep the paper wrapped glasswares , media etc. in the hot air oven.

   INSTRUMENTATION:

1.   Double walled chamber made of stainless steel or aluminium .

2.   A fan is set at the bottom of the oven which works to circulates the steam of hot dry through chamber resulting in rise temperature to sterilized the materials .

3.   There is a thermostates controlling the temperature .

4.   A thermometer is fitted for recording the temperature of the oven.

      USES:

v DRY sterilisation.

v Drying of glassware’s [ petriplates , tubes , flasks, pipettes].

v Heating of chemicals used for the preparation of primary standard .

v Maintain the sterility of already sterilized glass wares.                 

PRECAUTIONS:

v Do not keep open the door for long time.

v Keep the materials only after temp reach the settled point.

                                

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