#1. Why is a RODAC plate preferred over swab sampling for flat cleanroom surfaces?
#2. During an audit, an inspector asks why neutralizers are used in RODAC plates. What is the correct justification?
#3. Which surface is least suitable for RODAC plate sampling?
#4. A sudden spike in CFU on RODAC plates from the same location indicates:
#5. RODAC plates mainly support which GMP objective?
#6. What is the primary risk of applying excessive pressure during RODAC sampling?
#7. Which area is most critical for routine RODAC monitoring?
#8. RODAC plate results are usually expressed as:
#9. An auditor notices inconsistent sampling locations. What GMP concern arises?
#10. Why are RODAC plates valuable during cleaning validation?
#11. What cleanroom condition is most suitable for baseline RODAC data?
#12. During deviation investigation, RODAC plates help mainly in:
#13. Which incubation strategy improves overall microbial recovery from RODAC plates?
#14. Why are RODAC plates limited to defined surface areas?
#15. Repeated recovery of the same organism from RODAC plates suggests:
#16. Which document should define RODAC plate sampling locations?
#17. A Grade B cleanroom shows rising RODAC trends but air counts are acceptable. What is the likely issue?
#18. Why are RODAC plates commonly used on gloves?
#19. What action is most appropriate after repeated RODAC limit excursions?
#20. RODAC plates primarily monitor which contamination route?
#21. An inspector asks why RODAC plates are not used for porous surfaces. Correct response?
#22. Which factor most affects RODAC plate result reproducibility?
#23. During media fill, RODAC plates are used to verify:
#24. Which parameter must always be recorded on a RODAC plate label?
#25. Why is trending more important than single RODAC results?
#26. A cleanroom shows zero CFU repeatedly. What audit concern may arise?
#27. RODAC plates mainly support which contamination control principle?
#28. Which media is commonly used in RODAC plates for bacteria?
#29. What is the main limitation of RODAC plates?
#30. Which GMP document links RODAC trends to corrective actions?
