Define the collection approach
Passive exposure plates and active air collection do not measure the same thing. Tell us how samples will be collected and what the facility program requires before selecting plates or interpreting counts.
Capture the context
Record the location, collection date, exposure period and activity in the area. For an active system, include the collection volume and instrument information required by the program.
Avoid false comparisons
A count per exposed plate cannot automatically be converted to a count per cubic meter. Keep the sample basis, collection approach and exposure conditions visible in the record.
Coordinate handling
Use the medium and transport conditions assigned to the project. Protect plates from damage and unnecessary exposure after sampling, and arrange receipt around the agreed processing window.
Related testing & guidance
Technical & service references
Vanguard microbiology service menuFDA: Bacteriological Analytical ManualUSP: General Chapter <61>Source review: November 8, 2026. The agreed method and project scope govern the testing.