Local exhaust ventilation (LEV) control systems are a specific form of engineering control designed to remove airborne contaminants before they enter the general workplace whilst ensuring employee exposure is at a level that is as low as is reasonably practicable.


It is an employer's responsibility to ensure the thorough testing and examination of LEV systems according to Regulation 9 of the COSHH Regulations and is a legal requirement to be undertaken every 14 months.

A Thorough Examination and Test carried out by Workplace Scientifics Ltd will consist of three stages including a visual inspection to verify the LEV is in efficient working order, in good repair and in a clean condition.  An evaluation of the technical performance will be undertaken to confirm conformity with commissioning data and the requirements of the HSE Guidance Document: Controlling Airborne Contaminants at Work Guide (HSG258). Finally, an assessment to ensure the system is fit for purpose and providing the necessary exposure control.