File: Exposure Therapy Pdf 90898 | Applmicro00120 0197
applied microbiology oct 1971 p 659 665 vol 22 no 4 copyright 1971 american society for microbiology printed ilt u s a disc plate method of microbiological antibiotic assay i ...
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...Applied microbiology oct p vol no copyright american society for printed ilt u s a disc plate method of microbiological antibiotic assay i factors influencing variability and error w davis t r stout the lilly research laboratories eli co indianapolis inidiana received publication june several are investigated that normally cause variation in zone diameters conventional diffusion procedures these most serious is unequal exposure individual plates at top or bottom stacks to temperatures above below room temperature this ex posure avoided by novel handling incubation major variable but one which can be controlled varying time interval between pouring seeded agar applying pads with influence setting effects other sequential operations combined into composite then accounted normalized interposing external reference set solution sequence approximately internal zones em ployed such as volume poured wedge shape dish volumetric errors dilutions timing considerations studied discussed results st...