S.C. Code Ann. § 12-28-2315

The department shall appoint analysts, chemists, and inspectors required to carry out this article. The inspectors may examine all barrels, tanks, or other vessels containing petroleum or petroleum products to see that they are tagged properly as required in this article and, as directed, collect and test samples of petroleum products offered for sale in the State, and when so instructed, collect and send samples to the Department of Agriculture for examination.