NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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What is the particle concentration threshold for ISO class 5 air?

  1. 3,520 particles/m3

  2. 35,200 particles/m3

  3. 352,000 particles/m3

  4. 3,520,000 particles/m3

The correct answer is: 3,520 particles/m3

ISO class 5 air refers to an air classification based on the number of particles present in a specified volume of air. The particle concentration threshold for ISO class 5 air is 3,520 particles/m3. This means that for air to meet the ISO class 5 classification, it should contain no more than 3,520 particles per cubic meter. The other options are not correct because they do not reflect the specific particle concentration threshold for ISO class 5 air. A higher number of particles per cubic meter would indicate a lower air quality classification according to the ISO standards.

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