Question
The instrument shown below is used for sterilization of all except ?
A. Glass wares.
B. Dusting powder.
C. Sharp instruments.
D. Surgical Dressings.
Show Answer
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Correct Answer » D Explanation |
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Ans:D. Surgical Dressings.
The instrument shown in the picture above represents hot air oven.
Hot air ovens
- They are electrical devices which use dry heat to sterilize. Generally, they can be operated from 50 to 300 °C, using a thermostat to control the temperature.
- It is mainly used for the sterilization of glasswares such as pestle and motar, petridishes, flasks, pipettes, bottles, test tubes etc.
- It is used for the sterilization of powders such as sulphacetamides, sulphadiazenes, kaolin, zinc oxide, starch etc.
- Injections where fixed oils is used as the vehicle are sterilised by the dry heat method
- Example: injections of progestrone, injection of testosterone propionate and injections of oestradiols dipropionate.
- It is also used for sterilisation of scalpels, scissors, spatula, blades and glass syringes.
- This method is not suitable for the surgical dressings.
- This method is not suitable for the most of the medicaments, rubber and plastic good because the articles are exposed to a very high temperature for a long period.
