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Canadian Association for Laboratory Accreditation Inc.

Building Laboratory Excellence

Laboratory and analytical uses of ozone-depleting substances (ODSs)

The Fourth Meeting of the Parties to the Montreal Protocol (23-25 November 1992, in Copenhagen) adopted adjustments that mandated a phase-out of production and consumption of certain controlled substances by January 1, 1996. The controlled substances included chlorofluorocarbons (CFCs), carbon tetrachloride, and methyl chloroform (MCF).

These adjustments also allowed Parties to authorized production (or importation) for uses deemed to be essential. The Sixth Meeting of the Parties to the Montreal Protocol (6-7 October 1994, in Nairobi) deemed laboratory and analytical uses of ODSs as essential. Adopted in Cairo (November 23-24, 1998), Decision X/19 grants a world-wide exemption until December 31, 2005.

The last meeting of the Parties, held in Beijing, China (November 29-December 3, 1999) established a 'negative' list for laboratory and analytical uses of ODSs. Decision X/14 filled this 'negative' list with (a) oils, greases and total petroleum hydrocarbons in water, (b) tar testing in road-paing materials, and (c) forensic finger-printing. Starting on January 1, 2002, these applications will no longer be allowed to use ODSs or be granted an exemption for essential uses.

Jean M. Carbonneau
Environment Canada