Sterilization in dry oven.. two hours at 160 c

Sterilization in dry oven:

• A- one hour at 160 c.
• B-  90 minutes at 160 c.
• C- two hours  at 160 c.
• D- none.

Option C: Two hours at 160°C (320°F) is the recommended time and temperature for sterilization in a dry oven.

Here's why:

- Effectiveness:

Dry heat sterilization relies on the denaturing of proteins and enzymes in microorganisms to kill them. 160°C for two hours is sufficient to eliminate most bacteria, fungi, and even some spores, which are more resistant.

- Safety:

Higher temperatures or longer exposure times can damage heat-sensitive materials like some plastics or fabrics. Sticking to 160°C for two hours ensures effective sterilization while minimizing the risk of damaging your items.

- Standardized practice:

160°C for two hours is a common recommendation in laboratory and medical settings for sterilizing glassware, instruments, and other dry goods.

Additional Tips:

Here are some additional tips for dry oven sterilization:

- Pre-cleaning:

Make sure your items are clean and free of debris before placing them in the oven.

- Packaging:

Wrap items individually in heat-resistant materials like aluminum foil or sterilization pouches to prevent contamination after sterilization.

- Placement:

Arrange items in the oven so that they are not touching each other or the oven walls to ensure even heat distribution.

- Cool-down:

Allow the oven to cool down completely before removing items.