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Herbicide 2, 4, 5—T

Volume 977: debated on Wednesday 30 January 1980

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asked the Secretary of State for Industry, following the Advisory Committee on Pesticides' recommendation to Government Departments that experimental work first be carried out to devise a method for the determination of TCDD in formulations, what progress has been made in carrying out this recommendation and in improving the methods and techniques of measuring the amounts of TCDD in 2, 4, 5—T.

:The Laboratory of the Government Chemist has continued to study procedures for the estimation of the TCDD content of 2, 4, 5—T and its formulations. It is now possible to achieve limits of determination of less than 0·1 milligrams of TCDD per kilogram of sample for technical 2, 4, 5—T and for some of its commercial formulations. Those formulations which contain low proportions of 2, 4, 5—T and certain types and grades of oil still present analytical difficulties and further work on these is in progress.