BOHS P601 is the British Occupational Hygiene Society’s professional qualification for engineers who carry out Thorough Examination and Testing of LEV systems. Holding P601 demonstrates that an engineer has been formally assessed as competent to conduct LEV testing in accordance with HSG258 — the HSE’s technical guidance on controlling airborne contaminants at work. Always ensure your LEV testing is carried out by a P601-qualified engineer.

