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.
Measuring Fluorine in Industrial and Construction Waste using Benchtop NMR MQC Analyser. Processing and recycling of industrial and construction waste often requires measuremetns of fluorine content in the materials. It mostly relates to monitoring potential emission of toxic fluorine gas and optimisation of the waste processing. Our benchtop NMR analyser MQC systems provide a fast, simple and accurate method of measuring fluorine in liquid and dry waste. The NMR technique does not require the use of any chemicals and complicated sample preparation.
By Oxford Instruments plc based in Abingdon, UNITED KINGDOM.
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