What is BS EN 45544-1– Workplace air about? 
BS EN 45544-1 is the first part of the multi-series standard that specifies general requirements and test methods for the determination of the performance characteristics of personal, portable, transportable and fixed, continuous duty electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours in workplace atmospheres.
BS EN 45544-1 applies to apparatus whose primary purpose is to provide an indication, alarm and/or other output function to give a warning of the presence of toxic gas or vapour in the atmosphere and in some cases to initiate automatic or manual protective actions.  
BS EN 45544-1 applies to apparatus in which the sensor automatically generates an electrical signal when gas is present. 
BS EN 45544-1 is not applicable but may provide useful information, for apparatus 
- Used for the measurement of oxygen 
- Used only in laboratories for analysis or measurement 
- Used only for process measurement purposes 
- Used in car parks or tunnels (fixed apparatus only) 
- Used in the domestic environment 
- Used in environmental air pollution monitoring 
- Used for the measurement of combustible gases and vapours related to the risk of explosion 
BS EN 45544-1 also does not apply to open-path (line of sight) area monitors. For apparatus used for sensing the presence of multiple gases, BS EN 45544-1 applies only to the detection of toxic gas or vapour. 
Who is BS EN 45544-1– Workplace air for? 
BS EN 45544-1 on workplace air is relevant to: 
- Chemical Engineers 
- Researchers and scientists 
- Agencies concerned with health and safety at work 
- Analytical laboratories  
- Industrial hygienist 
Why should you use BS EN 45544-1– Workplace air? 
BS EN 45544-1 specifies the general procedures and test methods for installation, use and maintenance of electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours. 
BS EN 45544-1 benefits the end-user by providing analysis, sampling and monitoring, and preparing samples for the testing and maintenance methods. 
BS EN 45544-1 will allow you to provide measurement systems for the direct concentration of toxics and harmful gases that damage the ozone layer and affect the environment 
