(1) A lighter must have no sharp external edges.
(2) A lighter, when tested in accordance with schedule 1, part 1.3, 1.4 or 1.5, must not be damaged so as to affect its safe operation.
(3) A lighter, when tested in accordance with schedule 1, part 1.4 must not spontaneously ignite.
(4) The internal pressure of the fuel reservoir of a lighter when tested in accordance with schedule 1, part 1.6 must not suddenly decrease.