Air quality. Atmospheric measurements near ground with active Differential Optical Absorption Spectroscopy (DOAS). Ambient air and diffuse emission measurements Ingestion-build-63114 This revision of BS 3987

This revision of BS 3987 differs from the previous edition in that guidance is given in appendices on information to be supplied by the purchaser to the anodizer

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Switching pictures: To enable switching between different coded streams and substitution of pictures within the same stream

and/or Legionella pneumophilaby concentration and genic amplification

Air quality. Atmospheric measurements near ground with active Differential Optical Absorption Spectroscopy (DOAS). Ambient air and diffuse emission measurements Ingestion-build-63114 This revision of BS 39871 Scope This European Standard describes the operation of active DOAS measuring systems with continuous radiation source, the calibration procedures and applications in determining gaseous constituents (e. g. NO2, SO2, O3, BTX, Hg) in ambient air or in diffuse emissions.