Page 27 - MNU-PM502- Pharmaeutical Microbiology Theoritical Book

Pharm D- Clinical Pharmacy Program Third Level Pharmaceutical Microbiology& Antimicrobials (PM 502)

• The ovens sterilize items by heating the outside surfaces of the item,
which then absorbs the heat and moves it towards the center of the
item.

• The commonly used temperatures and time that hot air ovens need to

sterilize materials.

Temperature (℃) Time (min)

180°C 30 min

170°C 60 min

160°C 120 min

150°C 150 min

• NB: Sterilization time begins only after the sterilizer reaches the target temperature.

• Items that are sterilized in a hot air oven include:

Glassware (like petri dishes, flasks, pipettes, and test
tubes)

Powders (like starch, zinc oxide, and sulfadiazine)

Metal equipment (scalpels, scissors, and blades)

Materials that contain oils

• Advantages of hot air oven

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