1 Scope
This document specifies requirements for the performance and safety of stand-alone gas mixers intended for mixing oxygen with another gas for medical use.
This document does not apply to:
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a) blocks of flowmeters with separate controls for the flow of each gas;
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b) stand-alone gas mixers which mix oxygen with ambient air;
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c) stand-alone gas mixers with more than two different gas inlets;
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d) stand-alone gas mixers connected to an oxygen concentrator.