Pakistan ratified the Vienna Convention, the Montreal Protocol, 1992, The Montreal Protocol has been so far been ratified by 197 countries. The Montreal Protocol is designed for phasing out ozone depleting substances (ODSs) such as chlorofluorocarbons (CFCs), Halons, carbon tetrachloride (CTC). These ODSs are mainly used in the manufacturing of deep-freezers, refrigerators, foam blowing, fire extinguisher, process agents and solvents etc.

Keeping in view Pakistan’s commitments to the international community, National Ozone Unit under the project entitled “Institutional Strengthening of Ozone Cell for the Implementation of the Montreal Protocol” with the financial assistance of Multilateral Fund of the Montreal Protocol has been established under the Climate Change Division since January 1996.