Breathing Air Purifiers is high quality air is of vital importance to many industries, but nowhere as literally as in breathing air applications. The purity of the compressed air for breathing air is crucial to assure a safe working environment in a wide range of applications like asbestos removal, tank cleaning, sand blasting and others. Important Functions Atlas Copco: For this reason, Atlas Copco has advanced the BAP breathing air purifier range. Regular: The BAP takes air from any regular compressor and treats it to become ultra clean. Consists Number: It consists of a number of components, which together, after proper commissioning, produce air with a quality matching the Pharmacopoeia that will comply with the European Norm EN 12021. Compressed Breathing: Compressed air for breathing apparatus.