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HSE MDHS95/3 “Measurement of Personal Exposure to Metal Working Fluids”

This HSE approved method describes a procedure for the measurement of time-weighted (TWA) average concentrations of water-mix metalworking fluid originating from metalworking machine operations.

The method is only suitable when the machine sump fluid (liquid circulating in the machine) contains an element which is unlikely to emanate from a source other than the water or metalworking fluid concentrate used to prepare the fluid and this element is present at a high enough concentration to facilitate its use as a marker.

URL: http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs95-3.pdf