DecontaminationQuestion 12 of 100
Most instrument manufacturers specify a neutral pH detergent for routine cleaning. What pH range is considered neutral?
a.pH 1 to 4
b.pH 4 to 6
c.pH 9 to 11
d.pH 6 to 8
Explanation
Neutral detergents fall roughly between pH 6 and 8 and are the safest choice for the widest range of instrument materials, including anodized aluminum and delicate coatings. Strongly acidic products near pH 1 to 4 are reserved for removing mineral scale and rust deposits, and highly alkaline products near pH 9 to 11 attack aluminum and certain finishes even though they cut heavy soil. Selection must always follow the device manufacturer instructions for use.
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Related questions on this topic
- An ultrasonic cleaner has just been filled with fresh solution at the start of the shift. Why must the unit be degassed before instruments are processed?
- A technician loads a mixed basket of stainless steel clamps, chrome-plated retractors, and aluminum instruments into the ultrasonic cleaner. What is the problem with this load?
- A technician fills the wash sink with very hot water to speed up cleaning. Why must manual cleaning water stay below approximately 140 degrees F (60 degrees C)?
- A washer-disinfector is being validated and the question arises about which water quality is required for the final rinse. What is correct?
- A technician is scrubbing a hinged instrument with a brush at the decontamination sink and is spraying water droplets into the air. What is the correct technique?
- What is the purpose of the elevated-temperature rinse phase, often around 180 degrees F or higher, in a washer-disinfector cycle?
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