Dr Andrew Kemp and Dr Vanessa Hodgkinson present a study comparing the bacterial load on surfaces and the air particle counts in a working office environment, after the introduction of two new disinfecting technologies.
Comparative bacterial counts and air particle counts were taken prior to, and post the introduction of two new disinfecting technologies in a busy working office, over a 36 hour period.
Both rooms were tested after routine standard cleaning and before the start of the business day. This was repeated after the introduction of the new technologies into each room to compare the individual effect of each technology on both air and surface contamination levels. Live colony forming unit (CFU) counts were obtained using a Bacteria Specific Rapid Metabolic Assay (BSRMA).1,2 Additionally, blood agar cultures were used for species identification. Air sampling for particulates was conducted using a particle counter that can identify and individually count multiple particle sizes.
At the end of the 36-hour testing period, both rooms showed significant improvements in air particle and surface contamination levels.
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