Devices shall be designed and manufactured in such a way as to reduce as far as possible the risks posed by the unintentional ingress of substances into the device taking into account the device and the nature of the environment in which it is intended to be used.
Déanfar na feistí a dhearadh agus a mhonarú sa chaoi go laghdófar a oiread is féidir na rioscaí a bhainfeadh le substaintí a bheith ag dul isteach san fheiste de neamhthoil, agus an fheiste féin agus an cineál timpeallachta ar ann a beartaíodh í a úsáid á gcur san áireamh.