21 CFR §80.22
A sample of a batch of color additive which is to accompany a request for certification shall:
- (a)Be taken only after such batch has been so thoroughly mixed as to be of uniform composition throughout.
- (b)Held under the control of the person requesting certification until certified.
- (c)Be labeled to show:
- (1)The name of the color additive.
- (2)The manufacturer's batch number.
- (3)The quantity of such batch.
- (4)The name and post-office address of the person requesting certification of such batch.
- (5)Be accompanied by any label or labeling intended to be used.