Local Exhaust Ventilation (LEV) Test Certificate
A Local Exhaust Ventilation (LEV) Test Certificate records the results of a thorough examination and test of an LEV system used to control exposure to hazardous substances (dust, fumes, vapours). LEV testing is a legal requirement under COSHH Regulations and must be carried out at least every 14 months.
Sample LEV Test Cert certificate

Sample LEV Test Cert with fictional data. All personal details shown are fake.
What it covers
- LEV system description and process
- Hood/enclosure face velocity measurements
- Duct transport velocity
- Filter condition and pressure drop
- Fan performance
- Exposure assessment and recommendations
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Frequently asked questions about LEV Test Cert
How often must LEV systems be tested?
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