(1) In case of a commercial feed, except a customer-formula feed, it shall be accompanied by a label bearing the following information:

(a) The quantity statement.

(b) The product name and the brand name, if any, under which the commercial feed is distributed.

(c) The guaranteed analysis, stated in such terms which the commissioner and State Chemist by regulation determine are required to advise the user of the composition of the feed or to support claims made in the labeling. In all cases the substances or elements must be determinable by laboratory methods such as the methods published by the AOAC International.

(d) The common or usual name of each ingredient used in the manufacture of the commercial feed; the commissioner and State Chemist by regulation may permit the use of a collective term for a group of ingredients which perform a similar function, or they may exempt such commercial feeds, or any group thereof, from this requirement of an ingredient statement if they find that such statement is not required in the interest of consumers.

(e) The name and principal mailing address of the manufacturer or the person responsible for distributing the commercial feed.

(f) Adequate directions for use of all commercial feeds containing drugs and for such other feeds as the commissioner and State Chemist may require by regulation as necessary for their safe and effective use.

(g) Such precautionary statements as the commissioner and State Chemist by regulation determine are necessary for the safe and effective use of the commercial feed.

(2) In the case of a customer-formula feed, it shall be accompanied by a label, invoice, delivery slip, or other shipping document, bearing the following information:

(a) Name and address of the manufacturer.

(b) Name and address of the purchaser.

(c) Date of delivery.

(d) The product name and brand name, if any, and the net weight of each registered commercial feed used in the mixture, and the net weight of each other ingredient used.

(e) Adequate directions for use for all customer-formula feeds containing drugs and for such other feeds as the commissioner and State Chemist may require by regulation as necessary for their safe and effective use of the customer-formula feed.