What is the correct pressure differential relationship between a buffer room and an anteroom when compounding non-hazardous sterile preparations?

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Multiple choice — select the best answer

ABuffer room neutral to anteroom
BBuffer room positive to anteroom
CBuffer room negative to anteroom
DBuffer room equal pressure to anteroom

✓ Correct answer: B. Buffer room positive to anteroom The buffer room must maintain positive pressure relative to the anteroom to prevent less clean air from entering the cleanest compounding area, protecting the sterile compounding environment.

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What is the correct pressure differential relationship between a buffer room and an anteroom when compounding non-hazardous sterile preparations?

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