# Council Directive 93/85/EEC of 4 October 1993 on the control of potato ring rot, Division 5.3.3

Extent: E+W+S+N.I.

If any contamination is suspected the test must be repeated. This may be the case when all slides in a batch show positive cells due to the contamination of buffer or if positive cells are found (outside of the slide windows) on the slide coating.

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Source: https://www.legislation.gov.uk/eudr/1993/85/annex/I/division/5/division/5.3/division/5.3.3 (the official version)
Page: https://openlegislation.uk/eu-directive-1993-85/annex-I/division-5/division-5.3/division-5.3.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.