This catalogue is intended to assist users in making a transition from ODSs to alternatives that do not threaten the ozone layer. It is targeted primarily at plant engineers and managers responsible for identi1iing, evaluating, and implementing these alternatives. It is expected that government policy makers will also find the catalogue useful as they work with industry, bilateral agencies and agencies of the Multilateral Fund responsible for implementing the Montreal Protocol. This catalogue will also be useful to large commercial businesses and retailers that currently purchase and use ODS-containing products. The catalogue provides these businesses with an overview of the available alternatives and identifies some of the suppliers of these alternatives.