# Commission Directive 2006/56/EC of 12 June 2006 amending the Annexes to Council Directive 93/85/EEC on the control of potato ring rot, Division 9.2: IF-test

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

(a) Prepare a suspension of approximately 106 cells per ml in IF buffer (Appendix 3).
(b) Prepare a 2-fold dilution series of an appropriate antiserum.
(c) Apply the IF procedure (section 4).
(d) A positive IF test is achieved if the IF titre of the culture is equivalent to that of the positive control.

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Source: https://www.legislation.gov.uk/eudr/2006/56/annex/I/division/9/division/9.2 (the official version)
Page: https://openlegislation.uk/eu-directive-2006-56/annex-I/division-9/division-9.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.