EN 14042:2003

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Measurement objectives and strategy
   4.1 General
   4.2 EN 689
   4.3 EN 482
   4.4 Other tasks
5 Selection of the measurement procedure or device
   5.1 General
   5.2 Selection flow chart
   5.3 Selectivity requirements
   5.4 The influence of environmental parameters
   5.5 Fitness for purpose
6 Operating principles and characteristics
   6.1 General
   6.2 Measurement of chemical agents
   6.3 Measurement of airborne micro-organisms and endotoxin
7 Operation of the measuring devices
   7.1 Guidance for use of measuring procedures and personal,
        portable and transportable measuring devices
   7.2 Guidance for use of fixed measuring devices
8 Recommendations on the use of sampling pumps
   8.1 General
   8.2 Factors influencing the flow rate stability of a pump
   8.3 Flow rate calibration
   8.4 Calculation of flow rates and sampling volumes
9 Maintenance and calibration
10 Disposal of measuring devices
11 Requirements for training
12 Quality assurance
Bibliography

This European 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.This European Standard is based on the guidance given in EN 689 and the requirements of EN 482.Where appropriate, this European Standard specifies additional requirements specific to particular procedures or devices, or classes thereof.It is the user's primary responsibility to choose appropriate procedures or devices that meet the requirements of relevant European 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 manufacturer, user, test house or research and development laboratory, as is most appropriate.Although this Standard specifically addresses workplace air, many of the procedures or devices are also relevant to the assessment 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 and vapours in workplace atmospheres (EN 45544-4) and for diffusive samplers for the determination of gases and vapours in ambient air (prEN 13528-3).