scope:

This standard provides guidance on the selection of procedures, and the installation, use and maintenance of devices for the determination of concentrations of chemical or biological agents in workplace atmospheres. The standard is based on the guidance given in EN 689 and the requirements of EN 482. Where appropriate, this standard specifies additional requirements specific to particular procedures or devices, or classes thereof. It is the user's primary responsibility to choose appropriate devices that meet the requirements of relevant standards. One way of doing this is to obtain information or confirmation from the manufacturer. Type testing, or more generally, the assessment of performance criteria of procedures or devices, can be undertaken by the manutacturer, user, test house or research and development laboratory, as its most appropriate. Although this standard specifically addresses workplace air, many of the procedures or devices are also relevant to the assesment of air quality in ambient or indoor air. Specific guides exist for electrical apparatus used for the direct detection and direct concentration measurement of toxic gases an vapours in workplace atmosphere (EN 45544-4) and the diffusive samplers for the determination of gases an vapours in ambient air (prEN 13528-3).