en covers fm BRITISH STANDARD BS EN 14412 2004 Indoor air quality — Diffusive samplers for the determination of concentration of gases and vapours — Guide for selection, use and maintenance Confirmed[.]
BRITISH STANDARD BS EN 14412:2004 Indoor air quality — Diffusive samplers for the determination of concentration of gases and vapours — Guide for selection, use and maintenance The European Standard EN 14412:2004 has the status of a British Standard ICS 13.040.20 12&23