N.C. Gen. Stat. § 106-579.8

The Commissioner, or his authorized agent, shall have free access at reasonable hours to all places and property in this State where antifreeze is manufactured, stored, transported, or distributed, or offered or intended to be offered, for sale, including the right to inspect and examine all antifreeze there found, and to take reasonable samples of such antifreeze for analysis together with specimens of labeling. All samples so taken shall be properly sealed and sent to the Department of Agriculture and Consumer Services laboratories for examination together with all labeling appertaining thereto. It shall be the duty of the Commissioner to examine promptly all samples received in connection with the administration and enforcement of this Article and to report the results of such examination to the owner and registrant of the antifreeze.