SEM Vapour Free has been designed for tank and vessel cleaning where a LEL (lower explosive limit) and benzene levels prevent safe man entry. A very versatile water based product that has a Gold Band, CEFAS registered and offers excellent results for LEL and Benzene reduction / stability. One of the main benefits of the solution is that it has been developed to be used at ambient temperature, which offers commercial, environmental and operational savings in time, money and energy.