Breathing Air Quality Testing
Avelair provide compressed air quality and breathing air testing for a wide range of automotive, commercial, medical, pharmaceutical, dive and fire service industries.
Our equipment confirms the air purity in accordance with the latest BS EN /12021 requirements.
|Substance||Extract from BS EN 12021:2014 - Clause 6.|
|Contaminants – Compressed gas for breathing shall not contain contaminants at a concentration which can cause toxic or harmful effects. In any event, all contaminants shall be kept to as low a level as possible and shall be less than one tenth of a national 8 h exposure limit. For breathing air only the limit shall be less than one sixth of a national 8 h exposure limit. (WEL – See EH40)|
|Oxygen||(21 ± 1) % by volume (dry air)|
|Carbon monoxide||≤ 5ml/m3 (now at the same level as was formerly indicated in BS 4275)|
|Oil||0,5 mg/m3 (previously identified as lubricants [droplets or mist])|
|Odour/taste||Shall be free from unsatisfactory odour or taste|
|Water||See Note 1 and 2 - (Previously stated as "There shall be no free liquid water")|
|Note 1 – Compressed breathing air shall have a dew point sufficiently low to prevent condensation and freezing. Where the apparatus is used and stored at a known temperature the pressure dew point shall be at least 5 °C below the likely lowest temperature.
Note 2 – Where the conditions of usage and storage of any compressed air supply is not known the pressure dew point shall not exceed −11 °C.