§ Mr. Canavanasked the Secretary of State for Scotland what is the maximum allowable content of polychlorinated biphenyls, polychlorinated dibenzodioxins (especially 2,3,7,-8TCDD), and polychlorinated dibenzofurans in milk for human consumption; and what are the limits of detection for these various compounds.
§ Mr. John MacKayThere are no statutory levels laid down in respect of these substances. The limits of detection possible with equipment currently in use in this country, for these classes of compounds are as follows:
Compound Limits of Detection Polychlorinated Biphenyls 0.05 microgrammes per gramme Polychlorinated Dibenzodioxins (including 2,3,7,8,-D TCD) 0.02 nanogrammes per gramme Polychlorinated Dibenzofurans 0.02 nanogrammes per gramme