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DIN EN 13544-2:2010
Respiratory therapy equipment - Part 2: Tubing and connectors; German version EN 13544-2:2002+A1:2009
This European standard specifies requirements for tubing to be used for the therapeutic administration of respirable gases in domiciliary, ambulance and hospital practice including the interface to the equipment i. e. nipples and screw threaded connectors. This tubing is mainly used with oxygen, air or mixtures of these gases.
Deutsches Institut für Normung [din]