Laser Technician (International Board of Electrologist Certification) IBEC Board Exam

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What is the appropriate sterilization method for unpackaged instruments?

30 minutes at 250°F and 15 PSI
15 minutes at 250°F and 15 PSI
1 hour at 340°F
2 hours at 320°F

The correct answer is: 15 minutes at 250°F and 15 PSI

The appropriate sterilization method for unpackaged instruments is a critical aspect of maintaining a safe and hygienic environment in any facility utilizing such tools. The correct choice involves using steam sterilization, specifically under conditions of 15 minutes at 250°F and 15 PSI. This method is effective for sterilizing unpackaged instruments because it utilizes moist heat, which penetrates the surfaces and ensures that microorganisms are effectively killed during the process. Steam sterilization at this temperature and pressure has been established as a benchmark for ensuring the complete eradication of bacteria, viruses, and spores, achieving a high level of sterility assurance and meeting standards set by various health and safety organizations. Higher temperatures or longer times, as indicated in the other choices, may be effective but are not necessary for unpackaged instruments. Utilizing such extremes unnecessarily can lead to damage or degradation of the instruments. Therefore, using the established parameters—15 minutes at 250°F and 15 PSI—provides an optimal balance between effective sterilization and instrument preservation.