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BSI 20/30382325 DC 2020

$13.70

BS ISO 23431. Measurement of road tunnel air quality

Published By Publication Date Number of Pages
BSI 2020 36
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This Standard describes methods for determining air speed and flow direction, carbon monoxide (CO), nitric oxide (NO) and nitrogen dioxide (NO2) concentrations and visibility in road tunnels using direct-reading instruments. This Standard specifically excludes requirements relating to instrument conformance testing.

BSI 20/30382325 DC 2020
$13.70