5. The provisions of Part 2 (and of Part 5, so far as applying in relation to obligations under Part 2) do not apply to a pyrotechnic article manufactured for the purpose of research, testing and development, provided that provided that a visible sign clearly indicates that—
(a)the pyrotechnic article is not in conformity with Part 2; and
(b)the pyrotechnic article is not available for purposes other than research, development and testing.