Compressed breathing air is subject to strict limits of harmful contaminants defined in European standard EN 12021 and various defence standards such as DEF STAN 68-284 issue 3. The testing interval of breathing air compressors and associated equipment is 3 months and gases tested include carbon monoxide, carbon dioxide and oil vapour defined as hexane and heavier hydrocarbons. EN 12021 covers underwater applications including self-contained open circuit compressed gas breathing (SCUBA) and compressed gas line breathing (hard-helmet diving), respiratory equipment used on ground for escaping from toxic atmospheres and for working in contaminated atmospheres. It also covers breathing gas for hyperbaric operations and synthetic air. While EN 12021 does not cover aerospace applications, the British MOD publication DEF STAN 68-284 and its counterparts in other countries cover also the breathing gases used in aviation.
By Gasmet Technologies Oy based in Helsinki, FINLAND.
HI-Q Environmental Product Company provides air sampling instrumentation & systems for several niche applications in a number of disciplines in the broad area of `Life Sciences`. In the Biomedical, Chemical, & Pharmaceutical industries, HI-Q has marketed instrumentation for certain applications for many years. Our ambient, in-door breathing level air samplers, commonly known in the industry as `Goose-Neck` or `Giraffe` air samplers have been instrumental in analyzing workplace exposure. HI-Q has also developed accurate pre & post heap filtration stack sampling systems to aid laboratories in inventory control & atmospheric exposure monitoring for chemicals such as Radio Iodine.
By HI-Q Environmental Products Company based in San Diego, CALIFORNIA (USA).
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