Article 3
1. Member States shall provide that seed potatoes may not be placed on the market unless they have been officially certified as "basic seed potatoes" or "certified seed potatoes" and unless they satisfy the minimum conditions laid down in Annexes I and II. The Member States shall provide that seed potatoes which do not, during marketing, satisfy the minimum conditions laid down in Annex II may be sorted. The tubers which are not rejected shall then undergo a further official examination. 2. Member States may subdivide the categories of seed potatoes provided for in Article 2 into grades satisfying different requirements. 3. For seed potatoes which have been officially certified, the following may be determined in accordance with the procedure referred to in Article 25(2): - Community grades, - the conditions applicable to such grades, - designations applicable to such grades. Member States may prescribe the extent to which they apply these Community grades in certifying their own production. 4. For seed potatoes produced by micropropagation techniques and not meeting the size requirements of this Directive, the following may be determined in accordance with the procedure referred to in Article 25(2): - derogation from specific provisions of this Directive, - the conditions applicable to such seed potatoes, - the designations applicable to such seed potatoes.