La. Stat. tit. 3 § 4004
The purchaser and/or the cooperative shall maintain, both individually and collectively, a record of each producer's delivery of milk. The records shall state the date of delivery, the producer's name or permit number, the volume measurement and converted weight of milk, the temperature, the purchaser or cooperative and the signature of the licensed measurer-sampler or milk and cream tester. The producer shall be provided a daily record of volume and weight upon receipt and a collective record of weight and test upon payment. Daily and periodic laboratory records shall be maintained as relates to volume, weight, fat analysis, calibration log and licensed personnel performance reports. Upon request, the commissioner shall be granted access and/or copy of all records required.
La. R.S. § 3:4004