PRICES include / exclude VAT
immediate downloadReleased: 2021-03-19
ISO 23431:2021
ISO 23431:2021 - Measurement of road tunnel air quality
Format
Availability
Price and currency
English PDF
Immediate download
Printable
212.13 USD
English Hardcopy
In stock
212.13 USD
French PDF
Immediate download
Printable
212.13 USD
French Hardcopy
In stock
212.13 USD
| Standard´s number: | ISO 23431:2021 |
| Edition: | 1 |
| Released: | 2021-03-19 |
| Pages (English): | 31 |
| Pages (French): | 33 |
DESCRIPTION
ISO 23431:2021
This document describes methods for determining air speed and flow direction, CO, NO and NO2 concentrations and visibility in road tunnels using direct-reading instruments. This document specifically excludes requirements relating to instrument conformance testing.