Member States shall provide that lots of pre-basic seed potatoes shall satisfy the following minimum conditions:

1. (a)

   presence of earth and extraneous matter shall not exceed 1,0  % by mass;

2. (b)

   the number of potatoes affected by rots, other than ring rot or brown rot, shall not be present in a quantity exceeding 0,2  % by mass;

3. (c)

   the number of potatoes with external blemishes, including misshapen or damaged tubers, shall not exceed 3,0  % by mass;

4. (d)

   the number of potatoes affected by common scab over more than one third of their surface shall not exceed 5,0  % by mass;

5. (e)

   shrivelled tubers due to excessive dehydration or dehydration caused by silver scurf shall not exceed 0,5  % by mass;

6. (f)

   lots of pre-basic seed potatoes shall comply with the following requirements concerning the presence of RNQPs, or diseases caused by the respective RNQPs as set out in the table:

   RNQPs or symptoms caused by RNQPs	Threshold for the presence of RNQPs on the lots of pre-basic seed potato
   Candidatus Liberibacter solanacearum Liefting et al . [LIBEPS]	0 %
   Ditylenchus destructor Thorne [DITYDE]	0 %
   Black scurf affecting tubers over more than 10 % of their surface as caused by Thanatephorus cucumeris (A.B. Frank) Donk [RHIZSO]	1,0 %
   Powdery scab affecting tubers over more than 10 % of their surface as caused by Spongospora subterranea (Wallr.) Lagerh. [SPONSU]	1,0 %

7. (g)

   the total number of potatoes, as referred to in points (b) to (f), shall not exceed 6,0  % by mass.