2 CAR § 34-405
(a)
(1)
(b) (b) Notification will be repeated, when changing varieties, before ginning the new variety;
(b) (b) This includes dropping the rolls and making sure all conveyers and seed handling systems are cleaned.
(c) (c) Floors should be swept or blown free of all seed cotton.
(d) (d) This should be followed by a five-minute or more dry run of the gin until all loose seed is eliminated from the system;
(b)
(2) It shall then become and remain a one-variety gin for as long as it subsequently gins the one (1) variety, strain, or class for which it has been certified and complies with all other board rules.