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RR1043 Endotoxin in metal working fluid (MWF) mist

The risks to respiratory health from exposure to bacterial endotoxins are well established. The aims of this research were to:

The research concluded that there was a large discrepancy between concentrations of endotoxin and viable bacteria in mist compared to the concentrations in bulk fluid with airborne endotoxin levels generally falling close to or beneath the DECOS recommended level , whilst sump levels generally exceeded these by 100 to 1000 fold. Levels of viable bacteria captured in air were low compared to the levels in the sumps.

Further research is required to determine whether the discrepancy between bulk endotoxin and airborne levels is real or whether this is due to the impact of sampling or analytical methodology

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Updated 2015-03-23