Question

a new pharmacy technician asks a senior technician the difference between international organization for standardization (iso) class 5, 7, and 8 areas. which of the following statements should the senior technician include in the explanation?

\a class 8 area has a lower risk for contamination than a class 7 area.\

\a class 7 area has a lower risk for contamination than a class 8 area.\

\a class 5 area has a higher risk for contamination than a class 7 area.\

\a class 5 area has a higher risk for contamination than a class 8 area.\

Explanation:

ISO cleanroom classes (5, 7, 8) are based on airborne particle counts. Lower class numbers (e.g., 5) mean fewer particles (less contamination risk), higher class numbers (e.g., 8) mean more particles (higher contamination risk). So:

• Class 7 has fewer particles (lower risk) than Class 8 (more particles, higher risk).
• Class 5 has lower risk than 7, so "Class 5 higher than 7" is wrong.
• Class 8 has higher risk than 7, so "Class 8 lower than 7" is wrong.
• "Class 5 higher than 8" is wrong (5 has lower risk than 8).

Thus, the correct statement is "A class 7 area has a lower risk for contamination than a class 8 area."

Answer:

B. "A class 7 area has a lower risk for contamination than a class 8 area." (Note: Assuming the second option is labeled B; adjust identifier if options have different labels, but the text of the correct option is as above.)