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Colony Forming Unit (cfu)

A colony forming unit is a microbiological term that describes a single detectable colony that originates from one or more microorganisms. Colony forming units are typically expressed as CFU per ml for liquid samples, CFU per m³ for air sample and CFU per sample for samples captured on solid medium such as settle or contact plates.

Source: EU GMP Annex 1

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Last updated: 2 July 2024

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