Decision IV/12: Clarification of the definition of controlled substances

The Fourth Meeting of the Parties decided in Dec. IV/12:

1. that insignificant quantities of controlled substances originating from inadvertent or coincidental production during a manufacturing process, from unreacted feedstock, or from their use as process agents which are present in chemical substances as trace impurities, or that are emitted during product manufacture or handling, shall be considered not to be covered by the definition of a controlled substance contained in paragraph 4 of Article 1 of the Montreal Protocol;
2. to urge Parties to take steps to minimize emissions of such substances, including such steps as avoidance of the creation of such emissions, reduction of emissions using practicable control technologies or process changes, containment or destruction;
3. to request the Technology and Economic Assessment Panel:
1. to give an estimate of the total emissions resulting from trace impurities, emission during product manufacture and handling losses;
2. to submit its findings to the Open-ended Working Group of the Parties to the Montreal Protocol not later than 31 March 1994.