Spiral plater

A spiral plater is an instrument used to dispense a liquid sample onto a Petri dish in a spiral pattern. Commonly used as part of a CFU count procedure for the purpose of determining the number of microbes in the sample.[1] In this setting, after spiral plating, the Petri dish is incubated for several hours after which the number of colony forming microbes (CFU) is determined. Spiral platers are also used for research, clinical diagnostics and as a method for covering a Petri dish with bacteria before placing antibiotic discs for AST.

  1. ^ Gilchrist, J. E.; Campbell, J. E.; Donnelly, C. B.; Peeler, J. T.; Delaney, J. M. (1973). "Spiral plate method for bacterial determination" (PDF). Applied Microbiology. 25 (2): 244–252. doi:10.1128/am.25.2.244-252.1973. ISSN 0003-6919. PMC 380780. PMID 4632851.
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