Regulation 26 Hydrofluoric Acid
(1)
Where hydrofluoric acid is used it shall be kept in vessels so constructed as to minimise the risk of accidental spillage and inhalation of its vapour, and implements used for applying the acid shall be so designed as to prevent the acid from running or creeping up the handle onto the fingers of the user.
(2)
In any room or place in which such acid is used there shall be affixed a cautionary notice, in terms and in a form approved in writing by the Chief Inspector for the purposes of this Regulation, as to dangers attendant upon the use of the acid and precautions which should be taken.