منابع مشابه
Comparison of methods for quantitative determinations of airborne bacteria and evaluation of total viable counts.
Three different methods of estimating airborne bacteria were compared. An Anderson sampler, a slit sampler, an impinger, and filter samplers with gelatine filters or membrane filters were tested for collection efficiency. The comparisons were made in laboratory experiments with an aerosol of Staphylococcus epidermidis or Serratia marcescens, in field experiments in two different industries, i.e...
متن کاملCorrelation of direct viable counts with heterotrophic activity for marine bacteria.
Viable-bacteria counts, heterotrophic activity, and substrate responsiveness of viable bacteria have been used to measure microbial activity. However, the relationship between these parameters is not clear. Thus, the direct viable count (DVC) method was used to analyze seawater samples collected from several different geographical locations. Samples collected from offshore waters of the South C...
متن کاملSurface viable counts with nichrome wire loops.
A surface viable counting method is described making use of a nichrome wire loop having an external diameter 5 mm, which is streaked on an overdried plate. The loop holds 1/35 ml (0.02857 ml) peptone water. When tried in parallel with pipettes that delivered 1/50 ml (0.02 ml) drops, it gave reproducible results not at all inferior to those obtained with 50-dropping pipettes.
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ژورنال
عنوان ژورنال: Occupational and Environmental Medicine
سال: 1952
ISSN: 1351-0711
DOI: 10.1136/oem.9.4.309