The question of which packaging materials, products or packaging systems are environmentally preferable is complex, and a definitive assessment of the best practicable environmental option in any specific circumstance would require appropriate life cycle analysis.
Article 18 of EU Directive 94/62/EC on packaging and packaging waste prohibits member states from impeding the placing on the market of packaging that satisfies the provisions of the directive, i.e. which is in accordance with the essential requirements specified in Annex II of the directive as to the composition and the reusable and recoverable nature of packaging, These requirements were transposed into Irish legislation by means of the Waste Management (Packaging) (Amendment) Regulations, 1998.