A METHOD OF STANDARDIZING BACTERIAL SUSPENSIONS.
The opacity of a bacterial suspension is measured by the length of the column of the suspension required to cause the disappearance of a wire loop. By a simple formula the measured opacity is translated into terms of the concentration of bacteria per cc., and so made comparable with that of other suspensions of the same organism. An instrument for measuring the opacity of bacterial suspensions is described in detail.
Laboratories of The Rockefeller Institute for Medical Research.
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Gates