Doing Our Bit for the Ozone Layer
There are a number of steps that we can all take both as individuals and as groups to protect the Earth's ozone layer. We have all been part of the ozone depletion problem, through the use of chemicals in everyday products. However, we can all be part of the solution.
Following the Montreal Protocol most ozone depleting chemicals (ODCs) have or are being phased out of use in most target applications such as aerosols, refrigeration and air conditioning. However, consumer products bought prior to international agreements may still be in use in our homes and offices and cannot easily be replaced. Large appliances, such as refrigerators, have long lifetimes and early replacement would entail great cost. Proper care and maintenance of equipment to ensure that the CFCs they contain are never released to the atmosphere should be applied. Remember that a single CFC molecule can destroy 100,000 ozone molecules.
In addition, if purchasing fire extinguishers try to avoid any that contain halons, which have bromine in them. Purchase carbon dioxide, water, or dry chemical extinguishers instead. Finally, although foam packaging is CFC-free, some products contain HCFCs (hydrochlorofluorcarbons), which while far less damaging to the ozone layer, could contribute substantially to global warming. Avoid those that do. Use and re-use non-disposable packaging.