Guidance on the interpretation of workplace exposure standards for airborne contaminants

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This Guide provides advice on the application of workplace exposure standards for airborne contaminants (exposure standards) in the workplace.
It should be read in conjunction with Safe Work Australia’s Workplace Exposure Standards for Airborne Contaminants, which is available at: Exposure-Standards-Airborne-Contaminants.aspx.
That document contains a complete list of all agreed exposure standards that apply under the Work Health and Safety (WHS) Regulations, as well as critical information relating to their interpretation. Exposure standards are also available from the Hazardous Substances Information System (HSIS) online database, which can be accessed from the Safe Work Australia website or at

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