Certification Board for Sterile Processing and Distribution (CBSPD) Sterile Processing Technician Practice Exam

Which sterilization method is suitable for metal and glass containers, aluminum foil, and glassine envelopes?

1. Moist Heat

2. Dry Heat

3. Ethylene Oxide

4. Radiation

The correct answer is: Dry Heat

The appropriate sterilization method for metal and glass containers, aluminum foil, and glassine envelopes is dry heat sterilization. This method uses high temperatures for prolonged periods to effectively kill microorganisms, making it ideal for items that can withstand heat without being damaged. Unlike moist heat sterilization, which relies on steam and can corrode metals and damage certain materials, dry heat sterilization is non-corrosive and does not leave residues that might affect the integrity of the items being sterilized. Dry heat sterilization is especially useful for materials that are moisture-sensitive or can be affected by moisture, as in the case of aluminum foil and glassine envelopes. This method is also effective for items that contain substances that would lose efficacy if exposed to moisture. Although ethylene oxide is another potential method, it is typically used for delicate items and those that cannot withstand high temperatures or moisture. Radiation is often reserved for specific applications and does not suit the general sterilization of standard metal and glass containers. Moist heat is not suitable due to the risk of damage from steam exposure to these materials. Thus, dry heat stands out as the ideal choice for sterilizing these specific types of containers and envelopes.