Methods for measurement of air pollution - Determination of the mass concentration of ozone in ambient air: chemiluminescence method Ingestion-build-190310 The guidance has been adapted

The guidance has been adapted to recognize a different approach to environmental management

hexavalent chromium (Cr (VI))

fabrication and erection of timber frame walls for dwellings not exceeding four storeys and consisting of timber frame walls

— circuit-breakers

With BS EN 10348‑2 you can be ensured that the products consistently meet and exceed quality assurance targets

Methods for measurement of air pollution - Determination of the mass concentration of ozone in ambient air: chemiluminescence method Ingestion-build-190310 The guidance has been adaptedWhat is BS EN 1747 12 Methods for Measurement of air pollution about? BS EN 1747 12 specifies a chemiluminescence method for the determination of the mass concentration of ozone in ambient air. The method described in BS EN 1747 12 is applicable to the determination of the mass concentration of ozone between 2 4g m3 [0,001 ppm(V V)] and 10 mg m3 [5 ppm(V V)] at the reference conditions of 25 C and 101,3 kPa. Ultraviolet (UV) photometry is specified as