LEV Supplies is a collection of practitioner-designed tools and resources created to support the practical realities of Local Exhaust Ventilation design, testing, and assessment.

The products available here focus on clarity, consistency, and usability on site—helping LEV practitioners communicate performance, check calculations, and document findings more effectively during design work, COSHH Regulation 9 TExT, and training.

These are not generic templates or black-box tools. Each item has been developed from real LEV practice, with the aim of reducing avoidable errors, improving repeatability, and supporting clear, defensible professional judgement.