N.J. Stat. § 4:12-12
A proprietor of a milk gathering station shall keep, in such form as the secretary may prescribe, a record of transactions of purchases of milk or cream by him.
He shall, at least semimonthly, deliver to each person from whom he receives or purchases milk or cream and in the unit of measure used in computing the amount due therefor, an itemized statement of the several amounts or quantities of such milk or cream so received or purchased at such milk station from such person during the prior half month, or, if statements are delivered more frequently than semimonthly, during the period which has elapsed since the delivery of such last prior statement.
If the milk or cream is purchased or received on a butter fat basis, the statements shall include the percentage, or average percentage, of butter fat contained in the milk or cream as determined by tests, periodical or otherwise.
A proprietor shall keep a correct account of all the milk or cream daily received or purchased from each person at such milk station, which account shall be open to inspection by such person.
N.J.S. § 4:12-12