(c) Large 51-60 millimetres. (2) Potato seeds shall be packed in pockets or other containers approved by the Certifying Authority. 10. (1) Potato seed shall be presented for tuber control- Tuber control (a) not earlier than fourteen days and not later than nine months after it has been lifted; and (b) in seed lots not exceeding five tonnes each. (2) In respect of every tuber control carried out under these Regulations, a report in the appropriate form prescribed in the Third Schedule shall be rendered by the inspector and counter-signed by the grower. Control 11. (1) Potato seed samples shall be presented for control growing in accordance with instructions issued from time to time by the Certifying growing Authority. (2) In respect of every control growing carried out under these Regulations, a report in the appropriate form prescribed in the Third Schedule shall be rendered by the Certifying Authority. 12. (1) Potato seed which has been certified in accordance with these Regulations shall be sealed and labelled with the appropriate label provided by the Certifying Authority. (2) Potato seed shall be stored, both before and after certification, in a manner satisfactory to the Certifying Authority(a) so as to avoid disease, infection and contamination thereof; (b) in buildings disinfected with a disinfectant approved by the Certifying Authority; and (c) in lots separate from ware potatoes and other potato seed lots. Labelling and storing of potato seed