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

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Which instrument is used to measure humidity in the Sterile Storage area?

Hygrometer
Thermometer
Barometer
Psychrometer

The correct answer is: Hygrometer

The instrument used to measure humidity in the Sterile Storage area is a hygrometer. This device specifically assesses the amount of moisture in the air, which is crucial in maintaining proper conditions for sterile items. Humidity levels are important because they can affect the integrity and sterility of the medical supplies being stored. If the humidity is too high, it can promote the growth of mold and bacteria, while too low humidity might desiccate certain materials or cause plastic wrapping to become brittle. While thermometers measure temperature, barometers assess atmospheric pressure, and psychrometers determine humidity through the use of two thermometers (one dry and one wet), the hygrometer is the dedicated instrument that directly provides humidity readings, making it the most suitable choice for this specific application within the Sterile Storage area.