Regulation 5 Mercury, arsenic and organostannic compounds in industrial waters
No person shall supply by way of sale, or use in connection with any trade or business or manufacturing process—
(a)
mercury, arsenic or organostannic compounds intended for use in the treatment of industrial waters, irrespective of the use of those waters, or
(b)
any substance so intended of which mercury, arsenic or organostannic compounds are a constituent.