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About metalworking fluids

Metalworking Fluids (MWFs) are neat oils or water-based fluids used during the machining and shaping of metals to provide lubrication and cooling. They are sometimes referred to as suds, coolants, slurry or soap.

The main health risks from working with metalworking fluids

Exposure to metalworking fluids can cause:

Fluid and mist from water-mix wash fluids and washing machines used to clean machined components may be hazardous in much the same way as fluid and mist from metalworking machines, and the same principles of risk assessment, prevention and control should be applied.

How harm is caused

Metalworking fluids are mostly applied by continuous jet, spray or hand dispenser and can affect your health:

Key messages for managing the health risks

Control of Substances Hazardous to Health Regulations (COSHH) requires exposure to metalworking fluids by inhalation, ingestion or skin contact to be prevented where reasonably practicable, or failing that, adequately controlled.

You should:

To achieve the necessary control and risk reduction, among other actions, you will need to:

Updated 2015-06-09