Water ands Oil based aerosols

Manufacturing processes often involve work with metals which need to be processed and shaped by various tools. The work with metals is often undertaken using high speed computerised machining tools. Oil and various metal working fluids are essential component of the manufacturing process. Exposure of employees to oil mist and metal working fluids (MWF) occurs during milling and machining, accessing internal parts of machinery, manual handling of work pieces and preparation and disposal of cooling liquids.

React Occupational Hygiene Services Ltd offers its client a comprehensive oil mist and metal working fluids exposure assessment program. Your organisation will benefit from our knowledge and experience with metal components manufacturing processes. We will carry out a robust testing program to evaluate your employees' exposure not only to the most obvious contaminants such as oils and metalworking fluids but also to potentially hazardous additives and biological contaminants.

Our standard oil mist and metal working fluids assessment program involves:

  • Employees’ exposure assessments to oil mist, MWF, bio-contaminants
  • Sump fluids checks
  • Dermal exposure check
  • Evaluation of existing engineering controls and the need for RPE
  • When cooling fluids are applied to the work piece to achieve the required lubrication, rotation of the equipment causes formation of an Oil/MWF aerosol that can be inhaled by the machine operator. A variety of health effects can result from the exposure of machine operators to the additives present in water-mix MWFs and the chemical and biological contaminants produced by deterioration of the fluids during use. Most common effects are irritation of the upper respiratory tract, occupational asthma and a form of pulmonary fibrosis.

    The inhalation hazards of MWF are caused by exposure to three agents: the neat or diluted MWF, microbial contaminants, and other chemical contaminants of the fluids.

    Chemical hazards

    Mineral oils, ethanolamine, diethanolamine, amine carboxylates, amine borates, tolytriazole salts, sulfonates, alkanolamides glycol ethers, phosphated compounds, biocides, triazines, oxazolidines, isothiazolones, alkanolamines and primary amino alcohols

    Biological Hazards

    Endotoxins produced by gram-negative bacteria, Mycobacterium sp. Mycobacterium immunogenum, Desulfovibrio desulfuricans, Pseudomonas sp, Legionella sp.


    React Occupational Hygiene Services Ltd is part of React Group Plc, bringing together all the services and skills you need to provide a safe workplace.

    Visit the Group Plc behind the separate React companies for details of annual reports and investor relations

    Learn More

    Visit the extreme cleaning company that tackles the cleaning problems that non-specialists just can't cope with.

    Learn More

    Visit the leading environmental consultancy specialising in the detection and removal of asbestos and reinstatement afterwards

    Learn More

    React Occupational Hygiene Services Ltd, React Environmental Services Ltd and React Specialist Cleaning Ltd are part of React Group Plc