scope:

This standard specifies general performance requirements for procedures for determining the concentration of chemical agents in workplace air. Such requirements apply to all such measuring procedures, irrespective of the chemical nature or physical state (gas, vapour, suspended matter) of the agent, and irrespective of the sampling method or analytical method used. This standard applies to all stages of a measuring procedure, including transportation and storage of the sample where appropriate. This standard applies to measuring procedures with seperate sampling and analysis stages, and also to direct-reading devices. This standard is a basis of forthcoming standards for specific procedures and devices for workplace measurements. These specific standards will contain more detailed requirements and test methods for individual measuring procedures or devices which may necessitate elaboration of the requirements laid down in this standard. However, reasons for any specific changes will be given while the basic level of requirements in this standard is not reduced.