Autoclaving is a common method for sterilizing instruments in laboratories.
However, not all instruments can withstand the high temperatures and pressures of an autoclave.
Here are five types of instruments that cannot be autoclaved:
1. Heat-Sensitive Materials
Autoclaving involves high temperatures, typically around 121°C.
This can cause heat-sensitive materials to degrade or melt.
Examples include certain plastics and high-protein solutions like urea, vaccinations, and serums.
2. Sharp-Edged Instruments Made from High-Grade Carbon Steel
Instruments like scissors and scalpel blades made from high-grade carbon steel can become dull or damaged in an autoclave.
The high heat and pressure can affect their sharpness and functionality.
3. Certain Plastics
Not all plastics can withstand the high temperatures and pressure of an autoclave.
For instance, polyethylene trays should not be autoclaved as they may melt.
This can damage the autoclave and render the trays unusable.
4. Fabric and Linens
Fabric and linens can be destroyed by the high heat and moisture of an autoclave.
This makes it unsuitable for sterilizing such items.
5. Items Containing Solvents or Bleach
Solvents can emit toxic fumes when heated in an autoclave.
This poses a risk to laboratory personnel.
Similarly, cleaners containing bleach should not be autoclaved.
The chlorides in bleach can damage the autoclave unit.
In summary, while autoclaving is a highly effective method for sterilization, it is not suitable for all types of materials and instruments.
Care must be taken to ensure that only appropriate items are subjected to autoclave sterilization.
This prevents damage to the items and the autoclave itself.
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