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:
a) blocks of flowmeters with separate controls for the flow of each gas;
b) stand-alone gas mixers which mix oxygen with ambient air;
c) stand-alone gas mixers with more than two different gas inlets;
d) stand-alone gas mixers connected to an oxygen concentrator.nd edition 2018-01 Gas mixers for medical use — Stand- alone gas mixers Mélangeurs de gaz à usage médical — Mélangeurs de gaz indépendants Reference number ISO 11195:2018(E) ？ ISO 2018 ISO 11195:2018(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2018, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be r