The counting of surface colonies of bacteria
- 1 December 1948
- journal article
- research article
- Published by Cambridge University Press (CUP) in Epidemiology and Infection
- Vol. 46 (4) , 426-430
- https://doi.org/10.1017/s0022172400036603
Abstract
A colony count performed by spreading a known volume of suspension on the surface of a plate possesses certain advantages over other methods, of which the chief is ease of counting.The distribution of counts of several samples of the same suspension on medium of the same age and batch is as expected on statistical grounds.Different batches and ages of blood plates may give substantially the same count but this is not true for Leifson's and Wilson & Blair's media.A diluting fluid, which is satisfactory if blood agar is the plating medium, may not necessarily be so if special media are to be used.Keywords
This publication has 7 references indexed in Scilit:
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- The estimation of the bactericidal power of the bloodEpidemiology and Infection, 1938
- THE ACCURACY OF THE PLATING METHOD OF ESTIMATING THE DENSITY OF BACTERIAL POPULATIONSAnnals of Applied Biology, 1922