The breathing equipment must make it possible to supply the user with a breathable gaseous mixture, under foreseeable conditions of use and taking account in particular of the maximum depth of immersion.
Caithfidh an trealamh análaithe a bheith in ann an t-úsáideoir a sholáthar le haermheascán gásrach inanálaithe, faoi dhálaí úsáide intuartha agus ag cur san áireamh an uasdoimhneacht tumtha go háirithe.