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Updated: Sep 9, 2026

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Microtiter Dish Biofilm Formation Assay
Published on: January 30, 2011
Standardized biofilm ratio: a comparative tool for crystal-violet microtiter plate assay testing in gram-negative
Marcos A Munoz1, Marcos V Dos Santos2, Paolo Moroni3
1Department of Animal Science, Facultad de Ciencias Veterinarias, Universidad de Concepcion, Chillan 3812120, Chile.
Journal of Microbiological Methods
|September 7, 2026
Abstract:
Currently, assessment of bacterial biofilm formation using crystal-violet microtiter plate assay presents challenges in both method consistency and underlying biological rationale. This problem has limited comparison of results among researchers and standardized practical interpretation as a virulence factor. We propose a Standardized Biofilm Ratio (SBR) calculation model protocol for in vitro biofilm evaluation in Gram-negative bacteria.

