(1) Grading of seed potatoes is the responsibility of the grower. The department monitors grading activities for compliance with the United States Standards for Seed Potatoes and established state standards for seed potatoes.

(2) Upon request, the department provides shipping point inspections for seed potatoes. Fees established in chapter 16-470 WAC apply to all shipping point inspections.

(3) Three colors of tags are authorized for use on certified seed potatoes.

(a) Blue tags are used for seed potatoes which meet or exceed minimum requirements of United States Standards for US Number 1 grade of seed potatoes.

(b) Yellow tags indicate a contract grade between buyer and seller.

(c) White tags are used for seed potatoes which meet or exceed minimum requirements of US Number 1 standards for grade of seed potatoes except, that the size may not be less than one ounce or more than three ounces in weight.